British Foreign Secretary Boris Johnson is expected to address fellow European Union foreign ministers on Monday on last week's nerve agent attack on a former Russian double agent in Britain, two diplomats said.
Johnson is expected to speak at the start of the monthly Foreign Affairs Council in Brussels, after EU envoys agreed on Tuesday that he should have the floor.
Britain is seeking support from its allies over an attack it has blamed on Russia and it briefed ambassadors to NATO, the Western military alliance, on the issue on Wednesday.
British officials were not immediately available for comment.
