U.S. will look at Russian report into chemical weapon use with due diligence

The U.S. will review a recent report with due diligence that claims the Syrian opposition used chemical weapons against the Syrian government, the State Department said on Wednesday.

Jen Psaki, the spokesperson for the U.S. State Department, made the remarks on Wednesday during her daily press briefing. Psaki responded to questions about a recent Russian report that claimed there was evidence that the Syrian opposition obtained sarin gas and used it against Bashar al-Assad's Syrian regime. She said the U.S. received the report on Wednesday and would review it with the same due diligence given to all reports.

Psaki said the U.S. continues to doubt the assertions that the Syrian opposition used chemical weapons and urge Syria to let in U.N. investigators to determine the truth.

"The United States continues to have no reliable corroborated reporting to indicate that the opposition in Syria has used chemical weapons," Psaki said. "And unfortunately, at the same time while this is being presented, the Syrian regime has consistently refused to allow the U.N. access it has requested for an independent and credible investigation of a range of incidents, as you know, because we've talked about them before. And the Syrian regime could prove that its request for U.N. investigation is not just a diversionary tactic by granting the U.N. team unfettered access without delay."

Psaki said any use of chemical weapons would be of great concern to the U.S.