Donetsk, Ukraine -- Ukrainian forces launched an "anti-terrorist operation" Sunday after pro-Russian gunmen seized buildings in the eastern part of the nation, Ukraine's Interior Minister Arsen Avakov said on his Facebook account on Sunday.
CNN: Official says ‘anti-terrorist operation has started’

Acting Minister of Defense of Ukraine Mikhail Koval (R) and Olexander Turchynov, speaker of the parliament and the interim president, attend military exercises in Desna, Chernihiv region on April 2, 2014.