Foreign policy to lead last US presidential debate

Barack Obama and Mitt Romney will tangle over foreign policy in their final presidential debate tonight, both candidates still looking for a breakout from a deadlocked White House campaign with just two weeks to run.

Polls show Mr Obama with a small advantage about which candidate is best prepared to handle US foreign policy in chaotic world. Mr Romney will do his best in the 90-minute debate in Florida to minimise the president’s accomplishments and win the support of the small slice of undecided voters among the millions watching.