FILE - In this  March 20, 2018 file photo, NATO soldiers fly in a U.S. Air Force C-130 aircraft during a routine movement of NATO troops, transporting them from Kandahar to Kabul. After 20 years of military engagement and billions of dollars spent, NATO and the United States still grapple with the same, seemingly intractable conundrum — how to withdraw troops from Afghanistan without abandoning the country to even more mayhem. (AP Photo/Rahmat Gul, File)
Nato soldiers fly in a US Air Force C-130 aircraft during a routine movement of Nato troops, from Kandahar to Kabul, March 20, 2018. AP

Is it really the time to be talking about withdrawing US troops from Afghanistan?