WASHINGTON — The Obama administration tightened sanctions against the Syrian regime Thursday in response to reports by international monitors that forces loyal to President Bashar Assad used chemical weapons in 2014 and 2015.

“We condemn in the strongest possible terms the Syrian regime’s use of chemical weapons,” said Ned Price, a spokesman for the National Security Council. “The Assad regime’s barbaric continued attacks demonstrate its willingness to defy basic standards of human decency, its international obligations, and longstanding global norms.” Continue reading.