Britain summons Russian ambassador

LONDON – Britain has summoned Russia's ambassador to the Foreign office in London, a government source said on Wednesday ahead of a statement by Prime Minister Theresa May on the use of a Soviet-era nerve toxin to attack a Russian former spy.

May was due to announce what Britain would do against Russia after a midnight deadline she set expired without an explanation from Moscow about the poisoning in the southern English city of Salisbury on March 4.