Afghan mission 'in final phases', says David Cameron

The mission in Afghanistan is moving into its "final phases", David Cameron has said, at a joint press conference with US President Barack Obama.

Speaking at the White House, both leaders stressed that progress had been made in the country - despite losses of US, British and Afghan lives.

International forces will take on a support role from 2013, and Afghans will fully take over security in 2014.

The PM said they would not "give up on this mission", despite its "high cost".

Nick Robinson reports from Washington DC.