Premiers from the world's leading economic powers will renew pressure on Russia to act over the crisis in Ukraine at a summit in Brussels.
Leaders of the G7 group of economic powers will also try to thrash out the outline of an agreement over tackling the threat from terror posed by the Syrian conflict.
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A senior Labour peer has said rogue peers should be immediately suspended from the House of Lords when scandals break.
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Home Secretary Theresa May and French counterpart Bernard Cazeneuve call on EU nations to tackle the root causes of the migrant crisis.