Third, Biden said that the US can't be in Afghanistan "indefinitely," yet there are some 28,000 US troops in South Korea three-quarters of a century after the end of the Korean War, because the US has a strategic interest in defending the country against the nuclear armed North Korean despot, Kim Jong Un.
So too, the US could have left its 2,500 troops in place in Afghanistan, a force that is less than 10% of the American service personnel in South Korea, to enable the Afghan government to fight the Taliban and its jihadist allies, such as al Qaeda.
Fourth, Biden speciously implied that if the US has troops in Afghanistan then somehow it won't be strong enough to "meet the strategic competition with China and other nations."
The US military consists of 1.3 million active-duty personnel and yet it can't leave 2,500 troops in Afghanistan? To use a trademark Biden expression: C'mon man!