Afghan leader vows new chapter in US ties

Afghan President Ashraf Ghani professed deep gratitude to the American people Wednesday for their service and sacrifice in a protracted war in Afghanistan, but warned of extremism's persistent threat in a speech to US lawmakers. Addressing a rare joint meeting of Congress one day after President Barack Obama hosted him in the White House, Ghani expressed a revitalized optimism about the US-Afghan relationship. "We owe a profound debt to the 2,315 servicemen and women killed and the mor