Ukraine should receive an invitation to join NATO at the summit in Washington. Otherwise, Russia may start escalating the war, says the head of the Office of the President Andriy Yermak. According to him, the international group should enlist the support of influential world politicians regarding the need to speed up Ukraine’s accession to NATO. They should also change the opinion of some politicians in NATO countries, who still believe that Ukraine’s entry into the Alliance or an invitation. “We always ask the question of what additional escalation is meant. We believe, on the contrary, that …