The same thing would almost surely happen in Afghanistan if U.S. troops withdrew. Even with U.S. military assistance, the democratically elected government in Kabul is losing ground against the Taliban. The government controls only a little more than half the country’s districts, and it is suffering heavy casualties, with President Ashraf Ghani admitting that more than 45,000 security personnel have been killed since 2014.
If U.S. troops pulled out, while Pakistan continued to support the Taliban, the insurgents could march into Kabul. And if the victorious Taliban reneged on their pledge to break with international terrorist groups such as al-Qaeda, what would we do about it? Presumably launch more cruise missiles of the kind that proved so ineffectual in 1998. If the pro-Western regime fell, the United States would be devoid of allies on the ground to fight the terrorists — and, in any case, there would be no appetite in the United States for a resumption of our longest war.
The surest way for the Taliban to achieve its objectives would be to agree to whatever conditions the United States demands for a troop withdrawal, knowing that, once the troops are gone, it would not be bound by mere pieces of paper. Likewise, Kim could vastly expand his power if he tricks the United States into withdrawing its forces from South Korea. The Taliban and the North Koreans may have just found the perfect patsy in Trump. Now that he has failed to build his wall, he will be even more desperate for a foreign policy “win.” If I were a South Korean or an Afghan, I would be worried about being abandoned.