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The hallmark of an effective repressive system is not that everybody is being repressed, but that a few people are targeted and everybody else learns to keep their mouth shut. Meet repression with solidarity and mobilization, not self-censorship. More: tinyurl.com/37fdanve

This paper has been in the making for so long that eight children across the co-author group were born between the time we started and now! But it is finally out, and you can check it at arxiv.org/pdf/2503.13323

Just published on APSR First View: "The Train Wrecks of Modernization: Railway Construction and Separatist Mobilization in Europe" by Yannick Pengl, Carl Müller-Crepon, Roberto Valli, Lars-Erik Cederman, and Luc Girardin. cambridge.org/core/journals/…

🇬🇪 Tbilisi today: Day 124 of nonstop nationwide protests. 34 years ago today 99.08% of Georgians said Yes to independence from the USSR. Photos: Mautskebeli

I may be tired and a little hoarse, but as I said again and again on the Senate floor, this is a moment where we cannot afford to be silent, when we must speak up. What’s most clear to me tonight is that this is just the beginning, that Americans across this country, no matter

Let’s get in Good Trouble.

After getting some rest, I am in awe of everyone who continues to lift their voice and speak out. This is a moment for our country, and we must make a choice about the America we want to be.

A sad birthday for me today: the National Endowment for the Humanities (National Endowment for the Humanities) has terminated our grant for publishing Ukrainian literature in English translation effective immediately. This was the first such federal grant we received for our publications in 40+ years. Per the

We're tracking international student visa revocations across the country, follow our data updates here: insidehighered.com/news/global/in… for Inside Higher Ed

"GERDA: The German Election Database" is now officially out: nature.com/articles/s4159… Check out the data and more here: german-elections.com

Just published on APSR First View: "Military Service and Immigrants’ Integration: Evidence from the Vietnam Draft Lotteries" by Nan Zhang and Melissa Lee (@politicsatpenn Perry World House). cambridge.org/core/journals/…

Harvard has been given 72 hours to provide an incomprehensible amount of information, before the administration kicks anybody out that are not American. We are a country of immigrants and with a constitution. This is a shameful display.

We're offering free consultations for all Harvard University University researchers to discuss visa options. Please reach out Plymouth or email me directly [email protected]

Had a fun chat with American Political Science Review about our recently published paper. We discussed its background, implications and limitations.

This (recently updated) free textbook on difference-in-differences looks amazing! It comes with practitioner checklists and practice data + code. A teaching/research goldmine! by Clément de Chaisemartin and Xavier D'Haultfoeuille.

My book was just sent to press! It'll be available in print end of July. Focusing mostly on Southeast Asia during the 20th c, the book develops an argument about how state-building can present headwinds for nation-building.

We have some updates on our DDD paper. In our latest version, we have introduced three new applications and an open-source R package to facilitate the usage of all our DDD tools! 🚀R package: marcelortiz.com/triplediff/ 🔎Updated paper: arxiv.org/abs/2505.09942

New issue of Nationalities Papers out now—featuring a major exchange on David Laitin’s Identity in Formation (with Laitin, Kolstø & Harris Mylonas) + articles on #identity, #nationalism, Serbia, Ukraine, China & more. Read: tinyurl.com/5f74z2x8 #OpenAccess

In other news… 🦔

Our father, Derk Sauer, has passed away. It’s an immeasurable loss, and no words can truly capture what a remarkable father and husband he was. He dedicated his life to defending independent Russian media. In his final days, he asked that people continue to support the free press