US warned not to criticise ally

Pakistan has lashed out at Washington for accusing the ISI spy agency of supporting extremist attacks against US targets in Afghanistan.

Pakistani Foreign Minister Hina Rabbani Khar warned the US that it risked losing Pakistan as an ally. "If they are choosing to do so, it will be at their own cost," Ms Khar said. "Anything which is said about an ally, about a partner publicly to recriminate it, to humiliate it is not acceptable."

The US military chief, Admiral Mike Mullen had described a Taliban faction as a "veritable arm" of the ISI.