dedf6222312e309cb3ab025195304a64 (1)Ukraine accused Russia on Saturday of invading a region bordering Crimea and vowed to use “all necessary measures” to repel an attack that came on the eve of the Black Sea peninsula’s breakaway vote. The invasion reported by the Ukrainian foreign ministry was small in scale and concerned a region that lies just off the northeast coast of Crimea called the Arabat Spit. The dramatic escalation of the most serious East-West crisis since the Cold War set a tense stage for Sunday’s referendum on Crimea’s secession from Ukraine in favour of Kremlin rule — a vote denounced by both the international community and Kiev. MORE