KANDAHAR, Afghanistan – A Taliban roadside bomb killed five Afghan civilians and wounded two others in the south of Afghanistan, a provincial official said on Sunday.

Serbs vote on Sunday in a presidential election, with opinion polls giving hardline challenger Tomislav Nikolic a slim lead over pro-Western incumbent Boris Tadic, but not enough for a first-round victory.Here are profiles of the main candidates:

MOSCOW – Russia’s armed forces chief said on Saturday Moscow could use nuclear arms pre-emptively if under serious threat, his comments marking no change in defense policy but underlining a renewed military confidence.