Nuclear catastrophe 'narrowly avoided' -U.S. Ambassador to U.N.

STORY: "The world narrowly averted a nuclear catastrophe last night," Linda Thomas-Greenfield, U.S. Ambassador to the United Nations, told an emergency meeting of the 15-member Security Council, convened following the seizure of the Zaporizhzhia nuclear power plant in southeastern Ukraine by Russian troops.

As shells hit the area early on Friday, a blaze broke out in a training building - triggering a spasm of alarm around the world before the fire was extinguished and officials said the facility was safe.