US Secretary of Defense Leon Panetta has said that US has reached its limits with Pakistan, he repeated criticism of Pakistan's inaction, which he appeared to signal a somewhat tougher stance and a suggestion that the U.S. is becoming even more willing and quick to strike terrorist targets inside Pakistan.
A senior U.S. official acknowledged Thursday that the recent increase in drone strikes on insurgents in Pakistan is due in part to frustration with Islamabad. The official spoke on condition of anonymity to discuss sensitive operations.
