BBC News

1. Why did Starmer resign and what could happen next?

   The Labour leader says he will remain prime minister until his successor is chosen.

2. Watch and read Starmer's resignation speech in full

   Sir Keir announces he will be step down as Labour leader and PM in a Downing Street address.

3. Top lawyer whose 'Mr Rules' approach failed to connect with the public

   Less than two years after he won a huge majority in the 2024 general election, Sir Keir Starmer has been forced out.

4. Who is Andy Burnham? Ex-Manchester mayor who wants to lead the country

   The outgoing Greater Manchester mayor is lining up a third attempt to be Labour leader following his return to Westminster.

5. First round of US-Iran talks ends with encouraging progress, mediators say

   The US-Iran talks began on Sunday in Switzerland, after last week's agreement, which includes a commitment to reach a final deal within 60 days.