Russian Fighter Jet Crashes Off Crimea's Coast

Poland scrambles planes as Ukraine comes under missile attack, while explosions are heard in various Ukrainian regions and a Russian fighter jet crashes off Crimea. Ukrainian president urges US Congress to pass military aid package, warns of imminent major Russian offensive. US tells American companies to stop shipping parts that can be used in missiles and drones to foreign parties that might divert them to Russia. Russian court sentences journalist to prison for denouncing Moscow's military offensive on Ukraine. Central and eastern European countries mark 20th anniversary of Nato expansion, while Poland and Ukraine work to ease friction over farm imports and border blockades.