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Unresolved crisis
Russia and Ukraine have been locked in a bitter conflict since 2014, when Ukraine’s Kremlin-friendly president was ousted, Moscow annexed Crimea and then backed a separatist insurgency in the east.
Fighting between the Russia-backed rebels and Ukrainian forces has killed more than 14,000 people. In 2015, France and Germany helped broker a peace deal, known as the Minsk agreements, that ended large-scale hostilities but failed to bring a political settlement of the conflict.
The Kremlin has repeatedly accused Kiev of sabotaging the deal, and Ukrainian officials in recent weeks said that implementing it in full would hurt Ukraine.