Pakistan's High Commissioner to Britain Wajid Shamsul Hasan told The Sun in an exclusive interview that his country's relations with America are at their lowest ebb.
He said: "Patience is definitely reaching exhaustion levels." Mr Hasan said Pakistan backs the War on Terror waged by Britain and the US.
But he urged PM David Cameron to condemn US drone attacks on al-Qaeda and Taliban training camps in the north west of his country — dubbing them as "war crimes" and "little more than state executions".
Tough-talking Mr Hasan also declared Pakistan would have no choice but to support Iran if "aggressive" Israel attacks it.
But his immediate concern is the drones known to have killed 535 civilians, including 60 children, in three years.