Those groups are now allegedly being targeted by Russian airstrikes in the Arab country, which began September last year upon a request from Damascus.
A US-backed Kurdish group known as the Kurdish People’s Protection Units (YPG) are also said to have targeted the militants.
“You can use the cliché of choice — it’s a deal with the devil or beggars can’t be choosers,” said Frederic C. Hof, who was once Obama’s special adviser for the conflict in Syria.
According to American officials, protecting the trained militants from Russia and Kurds is not realistic anymore, and it makes more sense for the US to support YPG instead, which also receives US support in from of ammunition and airstrikes.
“By and large the only people who have been willing to fight ISIS on the ground in Eastern Syria is this Kurdish militia. But this militia has its own agenda. It has its own objective. Its objective is to establish a Kurdish autonomous zone,” Hof argued.