Ukraine's second-largest nuclear power plant, in the city of Rivne, has switched from Russian-made fuel to fuel from Westinghouse, a company based in Pittsburgh. It is part of a wider strategy by Kyiv to sever any reliance on Russia, and comes amid warnings about Russia's threat to nuclear plants. Imtiaz Tyab reports from Rivne. #news #ukraine #nuclearplant Each weekday morning, "CBS Mornings” co-hosts Gayle King, Tony Dokoupil and Nate Burleson bring you the latest breaking news, smart conversation and in-depth feature reporting. "CBS Mornings" airs weekdays at 7 a.m. on CBS and stream it at 8 a.m. ET on the CBS News app. Subscribe to “CBS Mornings” on YouTube: youtube.com/CBSMornings Watch CBS News: cbsn.ws/1PlLpZ7c Download the CBS News app: cbsn.ws/1Xb1WC8 Follow "CBS Mornings" on Instagram: bit.ly/3A13OqA Like "CBS Mornings" on Facebook: bit.ly/3tpOx00 Follow "CBS Mornings" on Twitter: bit.ly/38QQp8B Subscribe to our newslette...