Cameron and Obama 'turn up heat on Libya'

The UK Prime Minister David Cameron and US President Barack Obama have said they want to step up pressure on Libya, during a joint news conference in London.

Both men reiterated their calls for Libyan leader Col Muammar Gaddafi to step down, with Mr Cameron saying they were "committed" to working together to enforce the UN resolution.

The two men earlier held talks in No 10, which were expected to focus on the conflicts in Libya and Afghanistan.