Ukraine-Russia Tensions Flare as Russians Rebuild Military in Crimea

Ukrainian troops are on high alert as tensions rise with Russia. Kyiv has accused Moscow of increasing its troop presence on the Crimean peninsula annexed by Russia two years ago. Moscow is accusing Kyiv of an incursion into Crimea. Some experts say the timing is ripe for a conflict because the world's attention is elsewhere. VOA's Carolyn Presutti explains.