The Polish military is on alert after a Russian-made missile killed two people in its territory near the Ukraine border. Poland has called an urgent meeting of NATO leaders, amid fears that Russia's war in Ukraine could spill over into surrounding countries. Russia has denied launching any attacks near the Polish border.
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Russian forces have invaded Ukraine from land, air and sea with strikes causing widespread damage. Global leaders have condemned the move and imposed sanctions.
Russia has been hit by global sanctions following President Vladimir Putin's decision to invade Ukraine.