The Latest: British ambassador briefs chemical watchdog

11:50 a.m.

The British representative to the world's chemical weapons watchdog says it is highly likely that Russia is implicated in the nerve agent attack on a former spy and his daughter "by failure to control its own materials or by design."

Ambassador Peter Wilson told the Executive Council of the Organization for the Prohibition of Chemical Weapons on Tuesday that "I did not expect to have to brief this council on the first offensive use of a nerve agent of any sort on European territory since World War II ."

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