Biden to meet national security team amid fears of Iranian attack on Israel | First Thing

US trying to calm tensions after assassinations of Hamas and Hezbollah leaders last week. Plus, far-right riots escalate in UK

• Don't already get First Thing in your inbox? Sign up here

Good morning.

Joe Biden will meet with his national security team on Monday, the White House has said, as the US sends more fighter jets and warships to the Middle East amid growing fears of a retaliatory attack by Iran on Israel.

What has Iran said? Iranian state TV reported that the country's president described the assassination of Haniyeh as a major mistake by the Zionist regime [Israel] that will not go unanswered".

But when will we know? Harris's announcement is expected by Tuesday at the latest, when she will appear at a rally in Pennsylvania with her pick.