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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 Tuesday, March 25, 2025

Report for Tuesday, March 25, 2025

Top Trump administration officials accidentally add journalist to chat about Houthi strikes

Russia plays down swift progress in talks after Trump envoy’s optimism

Trump’s top intelligence officials set to brief Senate this week on national security threats

On the ‘brink of going nuclear,’ Iran must now choose between its ambitions and the West

Ukrainian state railway online ticket systems disrupted by ‘large-scale’ cyberattack

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