WASHINGTON, Nov. 8 (Xinhua) -- U.S. Secretary of State Rex Tillerson said in a joint statement with his British, French and German counterparts on Wednesday that "robust international response" and actions are needed so that "those responsible for the use of chemical weapons" in Syria "will be held accountable."
In a statement with British Foreign Secretary Boris Johnson, French Foreign Minister Jean-Yves Le Drian and German Foreign Minister Sigmar Gabriel, Tillerson said the four countries "have full trust" in the findings of a report released on Oct. 26 by the Organization for the Prohibition of Chemical Weapons (OPCW) and UN Joint Investigative Mechanism (JIM).
The report concluded that the Syrian government is responsible for the use of sarin in Khan Shaykhun on April 4 of 2017, and that the Islamic State was responsible for a sulfur mustard attack on the town of Um Housh in September 2016 on two consecutive days.
"A robust international response is now essential to hold those responsible to account, seek justice for the victims of these abhorrent attacks and to prevent such attacks from happening again," said the four foreign ministers. "After such a report, the Security Council and all its members have a common responsibility to protect the international non-proliferation regime and live up to their previous commitments."