Prime minister tenders her resignation in private letter to Conservative Party, will remain on until a new leader is chosen; Brexit still on for October 21, but remains stuck

Future of process for exiting the European Union uncertain, with higher risk of UK crashing out of the bloc in a few months

After Brexit chaos forces the departure of British prime minister, a look at the candidates to take her place, and the process by which they'll face off

As tensions mount, Foreign Secretary Jeremy Hunt warns Tehran to 'pull back from the destabilizing activities'

UK foreign secretary says he's 'very worried' about unintended escalation, calls for period of calm so both sides can understand each others' mindsets

Foreign secretary says Tehran 'putting innocent people in prison and using it as leverage' for its purposes