After the extraordinary summit of NATO in Brussels, Bulgaria's President Rumen Radev announced that the Alliance is strengthening its Eastern flank. Despite the increase of the military presence in Bulgaria, Romania, Hungary and Slovakia, one of the main goals of NATO is to prevent in any way escalation and expansion of the conflict outside the territory of the warring Russia and Ukraine, the head of state assured. He pointed out that the summit also confirmed the protection for each member state that is threatened under Art. 5 of the North Atlantic Treaty.