Tomorrow marks the start of my research seminar, "Rumor and War: History and Society in the Twentieth Century," @ehess.fr. We'll be discussing Marc Bloch on "fausses nouvelles," and I couldn't be more thrilled to be teaching his work at his intellectual home.

Looking forward to kicking off our seminar "Histoire et historiographie de la Shoah" this week with my lecture "Understanding the Anschluss: Communication, Surveillance, and the Persecution of Austria’s Jews". More information through the link below! @ehess.fr @crh.ehess.fr

📣 Applications for our fully-funded #PhD programme are now open! 👉 loom.ly/pvk17dc ⏰ Apply by 15 January 2026! What to know more? Meet us on our: 🌐Virtual Open Day - 2 December 2025 👉 loom.ly/sp5lOKM 🎓 #PhDlife #academicsky #history #skystorians

Academy in Exile offers 5 Residential Fellowships in Germany: Application deadline is 15 November 2025 www.academy-in-exile.eu

The fact that such public education has become necessary is mind-blowing.

Looking forward to the start of my teaching @ehess.fr this week! Beginning on Thursday, I'll be teaching an introductory course on Comparative Genocide Studies with @thomaschopard.bsky.social, part of the EHESS' new "Specialization in Genocide Studies"

A sliver of hope in dark times - bravo! More of this 👏👏👏 www.nytimes.com/video/us/pol...

An alle Kurz­ent­schlos­se­nen — heute Abend werde ich mit ein paar netten Kolleg*innen die Promotionsmöglichkeiten am @eui-history.bsky.social besprechen. Link zur Registrierung unten!

Had the great honor today of acting as an examiner at Damien De Santis' PhD defense. Congratulations, Damien! www.ehess.fr/fr/soutenanc...

In case you missed it... authorsguild.org/advocacy/art...

Happening now!

Excited about the upcoming publication of Izabela Paszko's #INFOCOM book on informal communication in WWII Upper Silesia! Congratulations! www.routledge.com/Informal-Com...

Looking forward to my first full day @ehess.fr @campuscondorcet.bsky.social !

Thrilled and profoundly grateful to have joined the faculty @ehess.fr @crh.ehess.fr this week. I can't wait to meet all my new colleagues and students! crh.ehess.fr/index.php?10...

Cold War-era nuclear safety notice, as they still hang in most Swiss apartment buildings. (I still remember bunkers packed to the brim with emergency supplies in most Swiss residential buildings well through the '90s)

What can rumors tell us about the history of the Holocaust? Read my new piece @histknowledge.bsky.social to find out! #INFOCOM historyofknowledge.hypotheses.org/26203

Alles Gute in Paris, liebe @carolinemezger.bsky.social und à bientôt!

This month marks the end of almost 9 years at the @leibniz-ifz.bsky.social. Thank you to everyone who made my time there so special! I will fondly remember working at the Center for Holocaust Studies, leading the INFOCOM Project, and the many fruitful exchanges with colleagues. Auf Wiedersehen!

So proud of my former PhD student Felix Berge, whose book on informal communication in Nazi Germany is about to come out! www.beck-shop.de/berge-hoeren...

All those affected, supporters & interested parties are cordially invited to contact the network. PDs are especially encouraged to join the network. 7/9

I distinctly remember, over a decade ago, how a Russian friend ghasped in utter disbelief that I was watching something like Colbert, and that it was being broadcast on US public TV. That, too, will soon be gone. variety.com/2025/tv/news...

My listening suggestion for this 4th of July youtu.be/QQmgt8qNKD8?...

And so it begins

Zeitenwende nun auch in der Steuerberatung

Word in from Andrea Peto that Budapest Pride drew 360k people. Photo to prove it! #BudapestPride #takethatOrban

It's official - my courses for next year @ehess.fr are now online! enseignements.ehess.fr/2025-2026/in...

Bye, bye, Princeton! Thank you to all the wonderful friends and colleagues who helped make this such an unforgetable semester!

I'd rather not ... (US roadside restaurant)

Little trip down memory lane

It's always fun finding your book out in the wild! Here - Princeton University Library

Spent some productive days researching in the collections of YIVO and the Leo Baeck Institute. Thank you to the Davis Center @princeton for funding the trip!

Greatly looking forward to presenting my research at the Davis Center Seminar next week — and discussing it with Jochen Hellbeck and the larger Princeton community, no less! history.princeton.edu/news-events/...

Now that things are becoming more official, I am delighted to announce that I have been elected as Maître de conférences (associate professor) at the EHESS. Thank you to everyone who supported me on the long road to tenure 🙏 I cannot wait to join the brilliant colleagues in Paris! @ehess.fr

Princeton town, showing up right now 🔥

Bravo 👏 👏 👏 www.npr.org/2025/04/01/n...

Another historic document has arrived in my e-mail inbox.

One of the things we can learn from history, I suppose, is that it IS possible to act ethically in deeply unethical times. How each and every one of us decides to do so will help shape the momentous upheavals of the coming years.

One of the more haunting testimonies of our time. time.com/7269604/el-s...

For those interested in last month's roundtable @Princeton on the 2025 German elections, a recording is now online:

Feeling profoundly grateful this weekend 🙏 More details to follow

Some stunning examples of (self-) censorship. Besides the devastating human consequences, I'm not sure how any serious research in the social sciences can be done under such directives.

The purging of American history has begun. National Museum of American History (Washington, DC), March 2025

Even the speech lengths have turned totalitarian.

Grateful to be back at the USHMM for some research this week

When even reading a newspaper becomes a form of doomscrolling...

Missing these kinds of headlines in the US press today: "In the UN General Assembly, the USA, Israel and Hungary, along with Russia and North Korea, vote against a resolution on the Ukraine war" (Süddeutsche Zeitung)

A very informative piece on the recent German elections, the AfD, and its relation to the MAGA movement

What are the repercussions of today's elections in Germany? How are we to understand the earth-shattering success of the AfD, 80 years after the perpetration of the Holocaust? Please join some colleagues and me at this roundtable @Princeton next Tuesday. All are welcome

This is a must-read article on Germany’s AfD party and its connections to Elon Musk and JD Vance. Very timely for Germany’s election tomorrow… time.com/7260499/alic...