Russian Foreign Minister Sergei Lavrov said Wednesday that talks about a security guarantee for Ukraine – against Russia – must involve Moscow itself. "Moscow won't agree with collective security guarantees negotiated without Russia," he said, implying a Russian veto over defenses for Ukraine.

NATO allies and Ukraine are working together to make sure security guarantees for Ukraine are at such a robust level that Russia will never try to attack again, NATO chief Mark Rutte said on Friday, adding that Europe and the United States would be involved in providing them.