European leaders appear alarmed by the speed the US has taken on its Russia plans.
France is hosting an emergency summit with European and NATO leaders to discuss the situation.
US and Russian officials are en route to Saudi Arabia for their own talks - Russia says Europe will have no role in these discussions.
Former BBC Foreign Correspondent Paul Wood told Mike Hosking the meeting in Saudi Arabia is wider than a Ukraine peace deal.
He says this is about the US resetting its relationship with Russia, but Europe is worried about the implications it will have on its security.
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The Mike Hosking Breakfast