Because Islam trumps all. Period. No matter how much blood and treasure America expended for Afghanistan or how aggressively Pakistan wages war against Afghanistan, Islam trunps all.
President says Afghans 'will never betray their brother' in TV interview aired days after Kabul visit by Hillary Clinton Guardian
"If there is war between Pakistan and America, we will stand by Pakistan," Karzai said in a television interview. He put his hand on his heart and described Pakistan as a "brother" country.