Scholar
LightNews

Cathryn Costello

Videos
H-index: 20
Political science 75%
Sociology 13%
more

by Cathryn Costello

profccostello.bsky.social
Huge congrats! It sounds wonderful. CC
1

by Cathryn Costello

profccostello.bsky.social
Thanks @hollycullenfreo.bsky.social for this public service - international labour law at the ICJ!
hollycullenfreo.bsky.social
Holly Cullen @hollycullenfreo.bsky.social · 5d
I'm no @drnajimagi.bsky.social (I'm more of an ILO nerd), but I watched yesterday's oral hearings in the advisory opinion proceedings on the right to strike under ILO Convention No 87 at the ICJ and provided some highlights in the thread below.
hollycullenfreo.bsky.social
Holly Cullen @hollycullenfreo.bsky.social · 6d
Happening now: live broadcast of oral submissions on the advisory opinion request from the ILO on the right to strike under ILO Convention No 87 on Freedom of Association.
1

Reposted by Cathryn Costello

hollycullenfreo.bsky.social
I'm no @drnajimagi.bsky.social (I'm more of an ILO nerd), but I watched yesterday's oral hearings in the advisory opinion proceedings on the right to strike under ILO Convention No 87 at the ICJ and provided some highlights in the thread below.
hollycullenfreo.bsky.social
Holly Cullen @hollycullenfreo.bsky.social · 6d
Happening now: live broadcast of oral submissions on the advisory opinion request from the ILO on the right to strike under ILO Convention No 87 on Freedom of Association.
THE HAGUE – The International Court of Justice (ICJ) holds public hearings in the advisory proceedings on the Right to Strike – International Labour Office; International Trade Union Confederation; In...
The International Court of Justice (ICJ) holds public hearings on the request for an advisory opinion concerning the Right to Strike under ILO Convention No. 87 on 6 October 2025.
webtv.un.org
4

by Aoife O’Donoghue — Reposted by Cathryn Costello, Colin Murray

aoifemod.bsky.social
The Wolfson Report treats #NorthernIreland and the international legal commitments of the UK Government - which are very clearly spelled out in the #1998Agreement - as mere political agreements.
Once again it is a Treaty & requires #ECHR rights - not UK versions of them
1/3
aoifemod.bsky.social
Aoife O'Donoghue @aoifemod.bsky.social · 6d
Ehm...

1) Because it is an integral part of the UK - not an overseas territority etcs., - & UK wide law applies to it

2) Direct Rule is always a possibility

3) Nice to the Conversative & Unionist Party looking for yet another sea border, as that is so popular.

See caj.org.uk/wp-content/u...
1 9 19

Reposted by Cathryn Costello, Mary Bosworth, Steve Peers , and 1 more

catbriddick.bsky.social
My book, out now! On migration law's treatment of women, gender-based violence, and the legal challenges that migrant women have brought to the rules that determine their status. I have links if you want to review a copy or read a free chapter....

global.oup.com/academic/pro...
2 16 40

by Cathryn Costello

profccostello.bsky.social
I despair of UK asylum developments - from bad to worse in terms of wrongheaded performative cruelty
danielsohege.bsky.social
Dan Sohege @danielsohege.bsky.social · 10d
Labour continues to show complete disregard for either basic humanity or reality.
While family reunion routes are already fairly limited, you couldn't create a bigger gift to smuggling gangs than cancelling them. These policies will increase number of people forced to use irregular routes. #r4today
danielsohege.bsky.social
Dan Sohege @danielsohege.bsky.social · 10d
There is no such thing, as Starmer well knows, as a "golden ticket of resettlement and family reunion" for people who have been granted refugee status. This is meaningless guff aimed to play to populist fantasies that refugees get provided with everything. 1/

www.theguardian.com/uk-news/2025...
1 3

Reposted by Cathryn Costello, Colin Murray

danielsohege.bsky.social
Labour continues to show complete disregard for either basic humanity or reality.
While family reunion routes are already fairly limited, you couldn't create a bigger gift to smuggling gangs than cancelling them. These policies will increase number of people forced to use irregular routes. #r4today
danielsohege.bsky.social
Dan Sohege @danielsohege.bsky.social · 10d
There is no such thing, as Starmer well knows, as a "golden ticket of resettlement and family reunion" for people who have been granted refugee status. This is meaningless guff aimed to play to populist fantasies that refugees get provided with everything. 1/

www.theguardian.com/uk-news/2025...
Starmer to end asylum ‘golden ticket’ of resettlement and family reunion rights
People granted asylum will have to earn right to invite family in plan charities call ‘straight from populist playbook’
www.theguardian.com
4 43 120

by Timothy Snyder — Reposted by Cathryn Costello, Mark A. Lemley, Christopher Wright , and 5 more

timothysnyder.bsky.social
From 1939-1945 German officers also listened to speeches from civilians about how the laws of war didn’t apply to them. And then they participated in the Holocaust, starved millions of prisoners of war, destroyed villages and cities, and were defeated.
atrupar.com
Aaron Rupar @atrupar.com · 12d
Hegseth: "We unleash overwhelming and punishing violence on the enemy. We also don't fight with stupid rules of engagement. We untie the hands of our warfighters to intimidate, demoralize, hunt, and kill the enemies of our country. No more politically correct and overbearing rules of engagement."
250 2.1K 5.4K

Reposted by Cathryn Costello

property-injustice.bsky.social
We're hosting our final project event on 29 Sept.

Land, Property and Spatial [In]Justice: Towards a Legal Geography of International Law

W/ project team & stellar guest speakers who influenced us
@amandabyer.bsky.social @sonyacotton.bsky.social @sineadmercier.bsky.social @elaj-ucd.bsky.social
1 2

Reposted by Cathryn Costello

aellaboudy.bsky.social
The programme is here! TriCON New Voices in Constitutional Law Workshop features 6 brilliant ECRs tackling diverse research inquiries, with expert feedback from leading constitutional law academics - plus a keynote session by Prof. Leah Trueblood. @tricondublin.bsky.social
2 3

by Laurent Pech — Reposted by Cathryn Costello

profpech.bsky.social
"the European Commission presented today its proposal to the Council to suspend certain trade-related provisions of the Association Agreement between the EU and Israel ... as well as its proposals for sanctions on Hamas, extremist ministers and violent settlers"

ec.europa.eu/commission/p...
1 1

Reposted by Cathryn Costello, Steve Peers

seanrehaag.bsky.social
A busy week...

My @refugeelab.ca released our report about tech and alternatives to immigration detention, co-authored by @danghez.bsky.social & @petramolnar.com, and co-published with @kaldorcentre.bsky.social and @idcoalition.bsky.social:

www.unsw.edu.au/content/dam/...
Cover image for a report entitled "From Surveillance to Empowerment: Advancing the Responsible Use of Technology in Alternatives to Detention" Accessible text via link
1 12 17

by Aoife O’Donoghue — Reposted by Cathryn Costello

aoifemod.bsky.social
From myself & @colinmurray.bsky.social on the European Convention on Human Rights & very briefly (bc it is clear) why it is not plausible to claim that it is possible to leave & not breach the 1998 Good Friday/Belfast Agreement.
cajni.bsky.social
CAJ @cajni.bsky.social · 26d
A new report by @colinmurray.bsky.social and @aoifemod.bsky.social explains claims the UK could leave the ECHR without breaching the Good Friday Agreement are “not credible.”

caj.org.uk/wp-content/u...
The front cover of CAJ's newest publication titled "The Belfast/ Good Friday Agreement 1998 and the European Convention on Human Rights: Explainer". The cover includes this title as well as a partially covered image of 'The Treaty Series' agreement for the Belfast Agreement.
3 13

Reposted by Cathryn Costello

biicl.bsky.social
📢 Marking 75 years of the European Convention on Human Rights (#ECHR) and 35 years of the #VeniceCommission
ECHR and Venice Commission: Guarding Human Rights and the Rule of Law, and Facilitating Constitutional Resilience
📌 BIICL, London | 🗓 6–7 Nov 2025
📌 Programme now available
buff.ly/hK00usl
2 1

Reposted by Cathryn Costello

crookedfootball.bsky.social
Bastani talks to @leaypi.bsky.social
Are We Living Through The End of An Empire? | Lea Ypi meets Aaron Bastani
YouTube video by Novara Media
www.youtube.com
1 7

Reposted by Cathryn Costello

non-signatory.bsky.social
Our new edited volume, Non-signatory States in International Refugee Law, has just been published 📌
The open access book explores the intricate relationship between the international refugee regime and states that are not signatories to the 1951 Convention and its 1967 Protocol.

Read the full book:
Non-signatory States in International Refugee Law
"Non-signatory States in International Refugee Law" published on 09 Sep 2025 by Brill | Nijhoff.
brill.com
1 3

by Aoife O’Donoghue — Reposted by Cathryn Costello

aoifemod.bsky.social
A must read from Guy S Goodwin-Gill - his exortation at the end

'We must make it known that we do not want and will not share our space with war criminals or génocidaires.'

& that we must talk & talk about genocide needs to be heard loud & clear among public international law scholars
1 5 8

Reposted by Cathryn Costello

marianavr.bsky.social
Today the elected members to the judiciary in Mexico 🇲🇽 take office and so a new era of sheer uncertainty re the independence & quality of judicial admin begins.
1 1 1

Reposted by Cathryn Costello

migobs.bsky.social
New piece in The Conversation by Rob McNeil and Peter Walsh from @migobs.bsky.social

The most radical part of Reform’s deportation plans theconversation.com/the-most-rad...
The most radical part of Reform’s deportation plans
‘Operation Restoring Justice’ would face legal, logistical and diplomatic hurdles.
theconversation.com
2 3

Reposted by Cathryn Costello, Alison Phipps, Matthew Waites

aliromah.bsky.social
For the 1st time the UK will be the the subject of an @amnesty.org global urgent action. It says this is to "protect the right to protest in the UK, following the arrest, since July 2025, of over 700 people for peacefully protesting in support of Palestine Action" www.amnesty.org.uk/press-releas...
Amnesty International launches global campaign to protect UK protest rights after Palestine Action arrests
The Urgent Action will involve letters addressed to the UK’s Chief Prosecutors, signed by activists and supporters all over the world.
www.amnesty.org.uk
18 17

Reposted by Cathryn Costello

adhaque.bsky.social
For my own take, see here:

8/8

t.co/MTYGJRxN2x
https://www.justsecurity.org/105629/amnesty-international-gaza-genocide-report/
t.co
1 8

Reposted by Cathryn Costello

adhaque.bsky.social
For more on this theme, see this excellent essay:

7/

t.co/FmsD1l3pky
https://opiniojuris.org/2025/05/26/genocidal-intent-in-armed-conflict-unpacking-the-icjs-only-reasonable-inference-standard/
t.co
1 1 7

Reposted by Cathryn Costello, David H. Kaye

ezrakleinbot.bsky.social
Today’s episode of The Ezra Klein Show.

When Is It Genocide?
Philippe Sands discusses how to think about the tragedies in Gaza through the lens of international law.
open.spotify.com/episode/0ZBm...

youtu.be/RrhBypHFYPY?...
Israel, Gaza and the Debate Over Genocide | The Ezra Klein Show
YouTube video by The Ezra Klein Show
youtu.be
5 27 98

Reposted by Cathryn Costello

drmarymcauliffe.bsky.social
#lettheaidin 🇵🇸
Photo of presentation of Sam
3 20 100

Reposted by Cathryn Costello

sallyhayd.bsky.social
Speaking about the past year of Middle East reporting in Kilkenny, August 10. Thank you to the arts festival for inviting me: www.kilkennyarts.ie/programme/th...
Sally Hayden | Kilkenny Arts Festival | 7 - 17 August 2025
Irish Times journalist Sally Hayden moved to Beirut in January 2024. Since then, she has travelled twice across the occupied West Bank; lived through and reported on the war in Lebanon; and crossed...
www.kilkennyarts.ie
12 21

Reposted by Cathryn Costello

duycks.bsky.social
🔥 ⚖️ 🌐 At 3pm CEST TODAY, 🇺🇳 ICJ will deliver a history-making ruling on #ClimateJustice!
We are setting up in front of the Court in Den Haag 🇳🇱.
👀 Watch this space to follow mobilization outside of the Court & for real-time analysis of the ruling
#AOLetsGo #ClimateJusticeAO
13 31

Reposted by Cathryn Costello

mariescurie-ire.bsky.social
Very useful resources for anyone preparing applications for #MSCA calls 👇
🔍 POLICY BRIEFS | RADIANCE
🔍 POLICY BRIEFS With all major #MSCA calls now open, it's the perfect time to align your proposal with key European policy priorities. The policy briefs developed by MSCA-NET (now 'RADIANCE&#3...
www.linkedin.com
1 1

Reposted by Cathryn Costello

mariescurie-ire.bsky.social
The #MSCA and Citizens call is now open! Check out these tips to prepare your application 👇
MSCA & Citizens call: 6 steps to prepare your application
Get started with this funding scheme and learn how to prepare a successful proposal.
marie-sklodowska-curie-actions.ec.europa.eu
1 2

Reposted by Cathryn Costello

kaldorcentre.bsky.social
Does the Australian government have a duty to repatriate citizens and permanent residents stuck in Iran and Israel?
Our own @profjmcadam.bsky.social, Dr Thomas Mulder & @reginajefferies.bsky.social explain what international law says ...
theconversation.com/australian-c...
Australian citizens in Iran and Israel are desperate to leave. Is the government required to help?
While the Australian government has frequently helped its citizens flee crises overseas, it is not legally obligated to do so. And repatriating citizens is complex.
theconversation.com
4 5

by Branko Milanovic — Reposted by Cathryn Costello, Branko Milanovic

brankomilan.bsky.social
crucial importance of economic growth
support for globalization: free movement of factors of production, goods and services
moderate inequality
economic/technological control of climate change
no wars of aggression.
www.ft.com/content/5340...
2 10

References

Fields & subjects

Updated 1m