The Taliban today claimed an audacious attack in Afghanistan, which killed four US troops mere hours after Washington said it would talk to the insurgents about ending a war that’s carried on for over a decade. The deadly rocket attack on Bagram, Afghanistan’s biggest US-led military base just north of Kabul, was a stark reminder of the potency of an Islamist insurgency that has hit major targets time and again.Prior to the Bagram attack, US President Barack Obama had welcomed the planned talks in Qatar as an “important first step”. But he warned of a bumpy road ahead as NATO troops enter the final stage of a 12-year foreign intervention. afp