Roadside bomb kills eight US troops in Afghanistan
Eight US troops were killed by a roadside bomb in southern Afghanistan on Thursday in the deadliest single attack on foreign forces in a month, the US military said.
Afghan violence has surged in recent weeks as Taliban-led insurgents ramped up their long-expected "spring offensive."
US commanders had warned a surge in violence was likely, with militants hitting back after NATO-led forces claimed parts of the insurgency's southern stronghold over the last year.
Thursday's bomb was the worst individual attack on foreign troops since eight US service personnel and a U.S. contractor were shot dead by an Afghan air force pilot at a military airport in Kabul on April 27.
Separately, another ISAF service member was killed earlier on Thursday when a helicopter crashed in eastern Afghanistan, the coalition said. The cause of that crash was under investigation.