President Biden appeared to get his math wrong during his address to the nation Tuesday on the withdrawal from Afghanistan by misstating the percentage of Americans who managed to get out of the war-torn country. In his remarks, Biden proclaimed the chaotic evacuation of Americans, Afghan allies and third-country nationals from Hamid Karzai International Airport outside Kabul to have been an “extraordinary success” and estimated that “about 100 to 200 Americans remain in Afghanistan with some intention to leave,” the same figure quoted by Secretary of State Antony Blinken on Monday. “The bottom line: 90 percent of Americans in Afghanistan...