Sweden to summon Russian ambassador over nerve toxin claim

The Swedish foreign ministry said it would summon Russia's ambassador on Tuesday over Moscow's claim that Sweden could be the source of a nerve toxin used in the Skripal attack in Britain.Britain accuses Russia of being behind the attack in Salisbury on Sergei Skripal, a former Russian spy for the West, and his daughter Yulia, using the Soviet-era nerve agent Novichok.Moscow has poured scorn on the allegations and a Russian foreign ministry spokeswoman said on Saturday the most likely source of