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The Cipher Brief curates open source information from around the world that impacts national security. Here’s a look at today’s headlines, broken down by region of the world.

Open Source Report for Thursday, May 15, 2025.

Report for Thursday, May 15, 2025

National Security Council expected to be overhauled under Rubio

Refusing to Meet Zelensky, Putin Sends Junior Team for Talks with Ukraine

Estonian navy tried to detain one of Russian 'shadow fleet' in Baltic Sea

U.S. and Iran are close to a nuclear deal, says Trump

Taiwan sees spike in PLA military activity as island stages defense drills

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