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Peter Schrijver

@psguu.bsky.social

570 followers 500 following 2.3K posts

PhD student Faculty Military Sciences Breda | Leiden University | interests: influence, intelligence, drones | BA History Utrecht, MA Military Strategic Studies Breda https://www.tandfonline.com/doi/full/10.1080/08850607.2025.2522222

www.tandfonline.com

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Peter Schrijver @psguu.bsky.social · Jul 15

Updated, to introduce myself a few links to articles written or co-written by me:

www.tandfonline.com/doi/full/10....

irregularwarfare.org/articles/i-w...

platformraam.nl/artikelen/27...

www.tandfonline.com/doi/full/10....

irregularwarfare.org/articles/ind...

mwi.westpoint.edu/ukraines-fig...

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Peter Schrijver @psguu.bsky.social · 3h

Wat mij betreft zit de kracht van zijn observatie er vooral in dat hij waarschuwt voor aanhoudende acties om steun voor Oekraïne te ondermijnen. Dat gaat dus over Europa. Blijven testen, kijken of er gereageerd wordt. Landen tegen elkaar uitspelen.

Peter Schrijver @psguu.bsky.social · 4h

Belangrijjk artikel, de Russen leren van hun fouten. Allereerst omdat eenheden horizontaal via Telegram frontervaringen delen, maar ook steeds meer geïnstitutionaliseerd binnen het ministerie van Defensie. Leidde o.a. tot de gevreesde drone eenheid Rubikon. www.foreignaffairs.com/russia/how-r...

How Russia Recovered

What the Kremlin is learning from the war in Ukraine.

www.foreignaffairs.com

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Peter Schrijver @psguu.bsky.social · 4h

Opinie van één van de betere analisten als het gaat om de Russisch-Oekraïense oorlog, @RALee85 (account op X):

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Peter Schrijver @psguu.bsky.social · 4h

Een wat genuanceerder artikel over de effecten van de Oekraïense campagne op de Russische oliesector. carnegieendowment.org/russia-euras...

Have Ukrainian Drones Really Knocked Out 38% of Russia’s Oil Refining Capacity?

Kyiv’s unprecedented strike campaign on Russian oil refineries has inflicted serious—but likely not critical—damage on the country’s ability to produce fuel.

carnegieendowment.org

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Peter Schrijver @psguu.bsky.social · 5h

Blokkeren van SIM-kaarten:

Russia has begun enforcing a 24-hour blackout on mobile data and text messaging for all foreign SIM cards aimed at preventing unmanned systems/drones from using the mobile network in Russia.

www.themoscowtimes.com/2025/10/08/r...

Russia Has Started Blocking Foreign SIM Cards for 24 Hours, Belarus Says - The Moscow Times

Russia has begun enforcing a 24-hour blackout on mobile data and text messaging for all foreign SIM cards that connect to its networks, authorities in neighboring Belarus said this week.

www.themoscowtimes.com

Peter Schrijver @psguu.bsky.social · 8h

Zie uitleg in deze 🧵 van @florianflade.bsky.social

bsky.app/profile/flor...

Florian Flade @florianflade.bsky.social · 9h

Anfang des Jahres hatte ich ein Gespräch mit einem hochrangigen #Bundeswehr Vertreter. Wir sprachen auch über die Frage, in welchem Bereich nun schnellstmöglich beschafft und investiert werden sollte. Seine Antwort: „EloKa, EloKa, EloKa!“ Was hat es damit auf sich? Ein 🧵 ⬇️

a black and white background with the words no signal written on it

ALT: a black and white background with the words no signal written on it

media.tenor.com

Peter Schrijver @psguu.bsky.social · 8h

‘Die Fähigkeit, gegnerische Truppen, Jets, Raketen oder Drohnen frühzeitig zu erkennen und abzuwehren, hat massiv an Bedeutung gewonnen. Die Bundeswehr ist dabei schlecht aufgestellt, wie Recherchen von WDR, NDR und SZ zeigen’.
www.tagesschau.de/investigativ...

Bedrohung aus Russland - bei der elektronischen Kampfführung hat die Bundeswehr offenbar Schwächen

Die Fähigkeit, gegnerische Truppen, Jets, Raketen oder Drohnen frühzeitig zu erkennen und abzuwehren, hat massiv an Bedeutung gewonnen. Die Bundeswehr ist dabei schlecht aufgestellt, wie Recherchen vo...

www.tagesschau.de

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Reposted by Peter Schrijver

UNITED24 Media @united24media.com · 21h

Chapter Ukraine is a new interactive platform by Chytomo showcasing Ukrainian books in translation and connecting readers, libraries, and bookstores worldwide.

🧵 1/4 ⬇️

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Peter Schrijver @psguu.bsky.social · 21h

Meer telecom, actueel: bsky.app/profile/auon...

auonsson @auonsson.bsky.social · 21h

There has been continued sabotage against telecoms infrastructure along roads of southeast Sweden. These are the roads, ports and railways necessary for moving troops to Gotland

Yesterday it was revealed that a fiber optic cable undergoing maintenance has been cut on several spots along highway E22

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Peter Schrijver @psguu.bsky.social · 21h

“Nemyx transforms individual drones into a coordinated swarm, multiplying mission impact and operational efficiency,” Meier added. “It’s a decisive advancement in unmanned systems, making autonomous drones operational at scale.”
auterion.com/auterion-lau...

Auterion Launches Nemyx, Enabling Fully Coordinated Drone Swarms

Swarm operates across multiple drone platforms to strike multiple targets autonomously Arlington, VA and Munich, Germany – 3 September 2025 – Auterion, a global leader in autonomous drone operating…

auterion.com

Peter Schrijver @psguu.bsky.social · 23h

‘In practice, this can mean disabling hostile command-and-control servers, seizing jammers and drone controllers, excluding offending entities from European hosting, and shutting down unlawful transmissions. Each action should be reviewed to ensure it remains legal, proportionate, and safe’. 2/2

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Peter Schrijver @psguu.bsky.social · 1d

Interessant stuk over wat nu al zou kunnen als maatregel tegen RF inmenging in Europa, o.a. op cybergebied: ‘International law allows unfriendly but legal acts, called retorsions, and proportionate countermeasures when facing a wrongful act’. 1/ cepa.org/article/five...

Five Ways to Punish Russia

With a bit of imagination and courage, NATO can impose immediate costs for Russia’s hybrid war operations across Europe.

cepa.org

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Reposted by Peter Schrijver

Chris Colijn @chriscolijn.bsky.social · 1d

Duizenden Oekraïense staatsburgers worden in Rusland vastgehouden. Sommigen worden ongewenst verklaard en uitgezet naar niemandsland, anderen moeten voor onbepaalde tijd wegrotten in gevangenissen waar ze worden mishandeld.

Lees meer bij @platformraam.nl

Thousands of Ukrainian civilians held without trial by Russia

Thousands of Ukrainians are trapped in Russian 'temporary detention centers' awaiting deportation to Ukraine. Among them are long-term Russian...

platformraam.nl

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Peter Schrijver @psguu.bsky.social · 1d

In het omsingelde Mariupol deden UA telecomwerkers hun uiterste best om laatste BTS mast in UA handen zo lang mogelijk functionerend te houden. Life line voor duizenden ingesloten Oekraïners. www.wired.com/story/mariup...

The Last Cell Tower in Mariupol

For weeks, a lone mobile base station allowed thousands in the besieged Ukrainian city to stay connected—until Russian troops arrived.

www.wired.com

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Peter Schrijver @psguu.bsky.social · 1d

Sowieso speelt het mob. netwerk een belangrijke rol in oorlog. UA telecombedrijven en de SSSCIP zetten bij begin RF invasie bel stappen netwerk overeind te houden. Inkomende RF roamers werden geblokkeerd, ook konden UA’ers blijven bellen ook bij niet betaalde rekening. www.enea.com/insights/the...

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Peter Schrijver @psguu.bsky.social · 1d

Of dit:

Ukraine’s "Operation Spiderweb” in early June, in which drones launched from containers on trucks attacked airfields deep inside Russia, made officials all the more eager to take action.

www.euronews.com/next/2025/07...

Russia's mobile internet shutdowns may limit net freedom

Russian and Ukrainian drones use cellphone internet networks to operate, so shutdowns are one way authorities try to counter the attacks.

www.euronews.com

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Peter Schrijver @psguu.bsky.social · 1d

Kan niet in de keuken kijken van de FSB, maar wellicht heeft dit er wat mee te maken: bsky.app/profile/anto...

Anton Gerashchenko @antongerashchenko.bsky.social · 1d

Reports have appeared about an explosion at the railway in Leningrad region of Russia that caused a train with military cargo to go off rails.

Russian authorities deny everything and have turned off mobile Internet connection in the area.

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Peter Schrijver @psguu.bsky.social · 1d

Fortunately for UA, the country has managed to mobilize a huge chunk of its standing army of IT workers into the military. Long before ‘22, UA’s IT sector had become a pillar of the country's economy, attracting talent with ↗️ salaries and a range of career paths.
kyivindependent.com/the-military...

The military branch behind Ukraine’s battlefield apps turns to weapons bureaucracy

Since the start of the full-scale invasion, Ukraine’s military has faced pervasive cyber pressure unprecedented in human history. Cell networks, Starlink terminals, and radio repeaters carry military ...

kyivindependent.com

Peter Schrijver @psguu.bsky.social · 1d

‘Russia has temporarily blocked the ability to use mobile data and send or receive SMS messages for customers of Lithuanian and other European operators roaming in the country, Lithuania’s Communications Regulatory Authority (RRT) said’. www.lrt.lt/en/news-in-e...

Russia blocks mobile data and text messages for European roaming customers

Russia has temporarily blocked the ability to use mobile data and send or receive SMS messages for customers of Lithuani...

www.lrt.lt

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Peter Schrijver @psguu.bsky.social · 1d

‘RF media Telegram channel ASTRA reported, citing local residents, that the intended target may have been the Antipinsky oil refinery, located in the se part of the city. Local residents reported hearing explosions as well as numerous fire trucks en-route sometime between 8pm- 9pm local time’.⤵️

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Peter Schrijver @psguu.bsky.social · 1d

Regionale pers @phartman85.bsky.social, belangrijk. Zeker in een tijd waarin een politicus van de BBB feitenvrij onzinpraatjes verkoopt.

BBB’er Henk Vermeer verspreidt foute cijfers in tv-programma Buitenhof www.destentor.nl/harderwijk/b...

Peter Schrijver @psguu.bsky.social · 2d

De Engelstalige versie van dit artikel: texty.org.ua/projects/116...

20 kilometers of the gray zone. The front line has become blurred

Inside the Kill Zone: How Modern Frontlines Really Look in Ukraine

texty.org.ua

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Peter Schrijver @psguu.bsky.social · 2d

Appels met peren, maar wel belangrijk voor discussie wat er eigenlijk nodig is om grote aantallen langeafstandsdrones te bestrijden. Zie artikel hieronder van @united24media.com

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Peter Schrijver @psguu.bsky.social · 2d

‘It isn’t the only missile the Ukrainian side uses at such ranges against Russia. We have many different missiles that fly various distances: Palyanytsia, Peklo, and Neptune’.
global.espreso.tv/ukraine-uses...

Ukraine uses more than Flamingo for long-range strikes on Russia, MP says

The Flamingo missile is already being used against targets inside Russia. However, it’s not the only Ukrainian development capable of flying over 1,000 km

global.espreso.tv

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Peter Schrijver @psguu.bsky.social · 2d

Gevolgen:

‘Russia is in the midst of a fuel crisis. At the height of the consumption season, gasoline production has dropped following Ukrainian strikes on oil refineries, and prices are climbing’. meduza.io/en/feature/2...

Long lines and empty pumps. Russia’s gasoline crisis in photos. — Meduza

Russia is in the midst of a fuel crisis. At the height of the consumption season, gasoline production has dropped following Ukrainian strikes on oil refineries, and prices are climbing. Some gas stati...

meduza.io

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