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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 Friday, May 16, 2025.

Report for Friday, May 16, 2025

U.S. military buildup at the border expands; DHS seeks over 20,000 National Guardsmen

Russians and Ukrainians meet in Turkey for first talks in 3 years

Rubio: All NATO members to agree to 5% defense spending over next decade

Trump announces $200 billion in deals during UAE visit, AI agreement signed

Taiwan more likely to face blockade, economic warfare from Beijing than invasion

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