First Thing: US Navy Seals declared dead after raid on Houthi-bound arms

An image released by the US military shows what it says is a vessel carrying Iranian-made weapons bound for Yemen’s Houthi rebels. Photograph: US Central Command/AP

Good morning.

Two US Navy Seals who went missing during an operation to seize Iranian weapons said to be bound for Houthi rebels in Yemen have been declared dead, the US military has said.