Reuters reports: An international inquiry found Syrian government forces responsible for a third toxic gas attack, according to a confidential report submitted to the U.N. Security Council on Friday, setting the stage for a showdown between Russia and western council members over how to respond.

The fourth report from the 13-month-long inquiry by the United Nations and the Organization for the Prohibition of Chemical Weapons (OPCW), the global chemical weapons watchdog, blamed Syrian government forces for a toxic gas attack in Qmenas in Idlib governorate on March 16, 2015, according to a text of the report seen by Reuters.

The third report by the inquiry in August blamed the Syrian government for two chlorine attacks – in Talmenes on April 21, 2014 and Sarmin on March 16, 2015 – and said Islamic State militants had used sulfur mustard gas.

The results set the stage for a Security Council showdown between the five veto-wielding powers, likely pitting Russia and China against the United States, Britain and France over how those responsible should be held accountable. [Continue reading…]