Taking responsibility for his decision to withdraw US troops from Afghanistan, US president Joe Biden said he respectfully disagrees with those who say he should have begun mass evacuations earlier, claiming there would have been a rush to the airport. "I take responsibility for the decision. Some say we should have started it sooner. I respectfully disagree. Had it been before, it would have led to a rush or a civil war. There is no evacuation from the end of the war without challenges, threats we face," he said. The United States forces left Afghanistan on Tuesday morning, marking the end of chaotic and messy exit from America's longest war. (Video credit: ANI)