KABUL, Afghanistan (AP) — Afghanistan’s former president says the United States came to his country to fight extremism and bring stability to his war-tortured nation and is leaving nearly 20 years later having failed at both. In an interview Sunday with The Associated Press just weeks before the last U.S. and NATO troops leave Afghanistan, ending their ‘forever war,’ Hamid Karzai said extremism is at its “highest point” and the departing troops are leaving behind a disaster. He says: “The international community came here 20 years ago with this clear objective of fighting extremism and bringing stability … but extremism is at the highest point today. So they have failed.”