Once Russia's cheating was exposed, the Justice Department says, the embarrassed country "fought back by retaliating against the truth tellers, and against the truth itself."
Special Representative for Syrian Engagement Jim Jeffrey says the U.S. has "lots of evidence" that the Damascus government is preparing for a "reckless escalation" of the conflict.
Two cylinders dropped on the rebel-held Syrian city of Saraqeb — sending nearly a dozen people to seek medical help for nausea and other symptoms — had contained chlorine, the OPCW says.
Investigators finished gathering samples from the town where a suspected chemical weapons attack occurred. The team suffered a few delays and Russia "may have tampered" with the site.
As chemical weapons inspectors assess an attack site in Douma, Syrian families from the town offer NPR witness accounts of what they describe as a chlorine strike in Douma.
An international inspection team has been waiting for nearly a week to investigate an alleged strike in Syria. Former inspectors say the delay will complicate their efforts.
Syrian state media said Tuesday that international inspectors had entered the site of a suspected chemical weapons attack. But the chemical weapons watchdog group OPCW now says that's not true.
Russian official media quotes the foreign ministry as confirming that the White House informed the Russian embassy. It follows days of confusion over the matter.
The Organisation for the Prohibition of Chemical Weapons would not confirm whether its inspectors have entered Douma, the site of a suspected chemical weapons attack earlier this month.