evidence: THE PRESIDENT: Last night in Kabul, the United States ended 20 years of war in Afghanistan — the longest war in American history. [...] In April, I made the decision to end this war. As part of that decision, we set the date of August 31st for American troops to withdraw. The assumption was that more than 300,000 Afghan National Security Forces that we had trained over the past two decades and equipped would be a strong adversary in their civil wars with the Taliban. [...] After more than $2 trillion spent in Afghanistan — a cost that researchers at Brown University estimated would be over $300 million a day for 20 years in Afghanistan — for two decades — yes, the American people should hear this: $300 million a day for two decades.