The U.S. Defense Secretary Leon Panetta said Thursday that the U.S. is “reaching limits of patience as far as Pakistan is concerned.” During a trip to Kabul for talks with military leaders, Panetta said it is “difficult to achieve peace in Afghanistan as long as there is a safe haven for terrorists in Pakistan.” Panetta’s words are some of the strongest yet in the diplomatic tug-of-war with Pakistan, a country whose cooperation is considered vital in stabilizing Afghanistan. Pakistan’s parliament has been drawing up recommendations on how to proceed with Washington, although the U.S. has strongly condemned the country for sentencing a doctor who helped the CIA in the deadly raid that killed Osama bin Laden to 33 years in prison.