Josh Kertzer
@jkertzer.bsky.social
2.2K followers 480 following 76 posts
John Zwaanstra Professor of International Studies and of Government at Harvard University | International relations 🤝 political psychology jkertzer.sites.fas.harvard.edu
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Reposted by Josh Kertzer
laynamosley.bsky.social
Applications for the Niehaus Center for Globalization and Governance's postdoctoral fellowship program for 2026-2027 are due Monday, October 13.

Details here: www.princeton.edu/acad-positio...
Application for Niehaus Center for Globalization and Governance - Postdoctoral Research Associate
www.princeton.edu
Reposted by Josh Kertzer
owasow.bsky.social
According to the “Global Terrorism Database (GTD)—arguably the most widely-used dataset in the study of political violence—anti-abortion activists constitute the single most common perpetrators of terrorist attacks in the United States.”

Source: jkertzer.sites.fas.harvard.edu/Research_fil...
Bar chart showing terrorist attacks in the United States by perpetrator, 1970–2020. The top panel highlights the ten most active groups, with Anti-Abortion extremists leading at over 200 attacks, followed by Left-Wing Militants, White supremacists/nationalists, FALN, NWLF, Black Nationalists, ALF, JDL, Student Radicals, and ELF. The middle panel shows abortion-related groups, where Anti-Abortion extremists dominate compared to smaller groups like Army of God, Phineas Priesthood, Pro-choice extremists, and Christian Liberation Army. The bottom panel shows Islamist/Jihadi groups, led by Jihadi-inspired extremists (about 40 attacks), with smaller contributions from Muslim extremists, Jamaat-al-Fuqra, Al-Qaida, Hanafi Muslims, AQAP, TTP, and Islamist extremists. Bars are color-coded: blue for abortion-related groups, red for Islamist/Jihadi groups, and gray for others. X-axis is number of attacks, Y-axis lists groups.
jkertzer.bsky.social
🚨 Exciting news! Harvard has two open senior searches this fall:

1️⃣ International Security
2️⃣ American Politics

I'm blissfully on post-DGS sabbatical and am not on either committee, but if you're curious about if you should apply, the answer is yes ☺️

academicpositions.harvard.edu/postings/15152
TENURED PROFESSOR IN INTERNATIONAL RELATIONS
The Department of Government seeks to appoint a tenured professor in International Relations with a focus on International Security. The appointment is expected to begin on July 1, 2026. The professor...
academicpositions.harvard.edu
Reposted by Josh Kertzer
ispp-pops.bsky.social
Working on political psychology research with a focus on East Asia? A new special issue of our journal will center East Asia to broaden the field’s geographic & cultural assumptions. Find the call in the Special Issues section of the link below & consider submitting your work! linktr.ee/POPSjournal
jkertzer.bsky.social
Congratulations @mlandauwells.bsky.social!
iojournal.bsky.social
Congratulations to @ucberkeleyofficial.bsky.social's Marika Landau-Wells, winner of the Robert O. Keohane award for the best research article in IO published by an untenured scholar (or scholars) in 2024.

www.cambridge.org/core/journal...
Reposted by Josh Kertzer
🚨 It’s publication day!

THE ART OF COERCION is finally out.

When do threats work? When they are perceived as credibly *conditional*. Credible and painful punishments are not enough.

Threats fail if targets feel “damned if they do and damned if they don’t.”

shorturl.at/qa4T5
The Art of Coercion by Reid B. C. Pauly | Paperback | Cornell University Press
The Art of Coercion presents a fresh explanation for the success—and failure—of coercive demands in international politics.Strong states are surprisingly bad at coercion. History shows they prevail...
www.cornellpress.cornell.edu
Reposted by Josh Kertzer
herzogsm.bsky.social
Now out open access in the Journal of Conflict Resolution. @laurensukin.bsky.social, @lanoszka.bsky.social, & I investigate US reassurance efforts in 2023 during Russia's war on Ukraine.

We conducted public opinion surveys in 24 countries on 6 continents.

journals.sagepub.com/doi/10.1177/...
Reposted by Josh Kertzer
mitsurumu.bsky.social
New working paper: “Survey Estimates of Wartime Mortality,” with Gary King, available at gking.harvard.edu/sibs. We provide the first formal proofs of the statistical properties of existing mortality estimators, along with empirical illustrations, to develop intuitions that guide best practices.
jkertzer.bsky.social
The fact that this flopped is an indictment of academic Bluesky
Reposted by Josh Kertzer
zeitzoff.bsky.social
Thrilled to share the cover of my upcoming book, out February 2026 from @oxfordacademic.bsky.social

NO OPTION BUT SABOTAGE
The Radical Environmental Movement and the Climate Crisis

global.oup.com/academic/pro...
Cover image of my book. Orange cover with bold white font of the title, and a large wrench superimposed over a forest fire. 
No Option but Sabotage
The Radical Environmental Movement and the Climate Crisis
Thomas Zeitzoff

    Provides a unique perspective on one of the most important and salient issues facing the public: the threat of climate change and how activists are confronting it
    Features in-depths interviews with more than 100 past and current activists and experts
    Incorporates case studies of the radical environmental movement from origins of Earth First! to the ELF to ecofascism to present-day climate activists
jkertzer.bsky.social
You'll never guess what Barbra Streisand is up to
Reposted by Josh Kertzer
harryoppy.bsky.social
Excited to report my article "Digital Interdependence and Power Politics" has been published open access in @bjpols.bsky.social. I use internet measurements to understand how international security influences global data flows www.cambridge.org/core/journal...
Digital Interdependence and Power Politics | British Journal of Political Science | Cambridge Core
Digital Interdependence and Power Politics - Volume 55
www.cambridge.org
jkertzer.bsky.social
Lots going on lately here, but I wanted to take a moment to congratulate our incredible Harvard Government PhD graduates! 🎓🫶
Reposted by Josh Kertzer
minjulisettekim.bsky.social
My ambassador paper with Shu Fu is out in @worldpolitics.bsky.social!

Ambassadors promote domestic exports to a host country and represent the interests of their home country at large. However, are trade benefits equally distributed domestically? 🧵
muse.jhu.edu/pub/1/articl...
Reposted by Josh Kertzer
Reposted by Josh Kertzer
jonathan-renshon.bsky.social
Delighted and honored to receive the 2025 Karl Deutsch Award from the International Studies Association. I attribute this almost entirely to my luck in having amazing colleagues, mentors, collaborators and students over the years; I've been incredibly fortunate.
@isanet.bsky.social
#ISA2025
Reposted by Josh Kertzer
malpas.bsky.social
greatest political science achievement is getting “best flavor” in the department Bake Off?

my PhD cohort social core all won @marchvidkjaer.bsky.social @cerny.bsky.social. Congrats to @gabrielaarmani.bsky.social for winning the judicial electoral college + popular vote —pretty good in the US !
jkertzer.bsky.social
An esteemed panel of judges (last year @tanishafazal.bsky.social was our guest judge!) evaluate each entry on five criteria, and aggregate scores across them!

No coffee category, sadly - I tried to use emojis to represent the winning dishes, but there was no Tiramisu emoji so I improvised 😂
jkertzer.bsky.social
Thanks to @stephanieternullo.bsky.social @feyaadallie.bsky.social @weatherheadcenter.bsky.social's Cory Gillis and national treasure Thom Wall for their expert judging despite my lack of photo evidence

(And congratulations to @chriskenny.bsky.social, who won most difficult two years in a row!)
jkertzer.bsky.social
The 3rd Annual Great CGIS Bakeoff was a triumph!

Congratulations to Gabriela Armani for her doubly-winning Brazilian Banoffee, & runner-up Aleksandra Conevska! 🏆

Category winners:
🍪 @marchvidkjaer.bsky.social
🥮 @cerny.bsky.social
🥧 @malpas.bsky.social
☕️ Lucia Mendoza
🏆 @chriskenny.bsky.social
Reposted by Josh Kertzer
carlmc.bsky.social
I'm very happy that we were able to rerun our 2022 conjoint experiment on Ukrainians' attitudes towards the war and its brutal tradeoffs in Dec '24/Jan '25. See below article in Foreign Affairs for a summary. More details in our (short) working paper here www.carlmueller-crepon.org/publication/...
Reposted by Josh Kertzer
poppublicsphere.bsky.social
NOW OUT ON FIRSTVIEW!!

Toward a Qualitative Study of the American Voter

By Anna Berg & @stephanieternullo.bsky.social

https://buff.ly/4gN6cFR
Reposted by Josh Kertzer
A small ray of light: my paper with @heingoemans.bsky.social and @miweintraub83.bsky.social, “Loss Framing in Territorial Disputes,” is “just accepted” at @thejop.bsky.social! See what prospect theory can (and can’t) explain about territorial disputes: www.journals.uchicago.edu/doi/10.1086/...
Loss Framing in Territorial Disputes | The Journal of Politics: Vol 0, No ja
www.journals.uchicago.edu
Reposted by Josh Kertzer
jkertzer.bsky.social
Happy to review Mearsheimer and Rosato's new book, a spirited takedown of political psychology that claims that political psychologists don’t study how individuals comprehend the world around them, which is rather like arguing that botanists don’t study plants

www.tandfonline.com/doi/pdf/10.1...