Obama and Romney prepare for final debate

Barack Obama and Republican rival Mitt Romney confront each other on foreign policy early tomorrow morning UK time in a third and final presidential debate, a must-win televised face-off heading into the final two weeks of the deadlocked campaign for the White House.

Polls show Mr Obama with an advantage in voter perceptions about which candidate would do best in foreign affairs, but Mr Romney is expected to use the head-to-head meeting in Boca Raton, Florida, to whittle away the president’s edge.