IDS: "Keep turning the screw"
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Iain Duncan Smith urges G7 to keep up pressure on Russia

Some of the world's most powerful countries have rejected British calls for targeted sanctions against Russia.

Former Conservative party leader Iain Duncan Smith, who met with Congressional leaders in Washington last week, tells BBC Radio 4's World at One that he is not surprised by the reluctance of some of the G7 members to impose sanctions, but he believes it was right for the UK to return to the idea.