Strikes against Houthi rebel sites in Yemen are "necessary and proportionate" to protect the global shipping in the Red Sea, Rishi Sunak has said.

The UK and US launched targeted strikes on military facilities overnight.

Mr Sunak said the action against the Iranian-backed group, who he accuses of threatening UK ships, was in "self-defence".

In response, Houthi officials have warned the UK and US will "pay a heavy price".

The US-led strikes are the first against the Houthi militia since it started targeting international shipping in the Red Sea last year.