The US Senate has confirmed John Brennan as the Obama administration's next director of the Central Intelligence Agency.

The Senate voted 63-34 in favour of Mr Brennan.

The vote followed Republican Senator Rand Paul's attempt to slow the White House counter-terrorism adviser from becoming the next head of the CIA.

Mr Paul was irate about the reluctance of Obama administration officials to declare that "targeted killings" of American citizens on US soil were unconstitutional.

He spent nearly 13 hours speaking on the Senate floor in an old-fashioned filibuster - in which a senator speaks until he can continue no longer - to prevent a vote on Mr Brennan.