A suspected suicide bomber attacked a bus carrying German peacekeepers through Kabul today, killing at least three soldiers and wounding eight in the deadliest attack on the international force in Afghanistan, US officials said.

US troops guarding the American embassy in Kabul shot dead three Afghan soldiers today after mistaking them for assailants, the chief of police in the capital said.

AFGHAN president Hamid Karzai survived an assassination attempt yesterday when a security guard fired at his car shortly after 22 people were killed in a car blast in Kabul.