For the better part of six years since Russia and Ukraine signed the Minsk II cease-fire accord for the disputed eastern Ukrainian region of Donbass, one question has loomed: How will the U.S. and NATO respond if Russian troops again cross back over the so-called Line of Contact, dividing Ukrainian …

Syria has been labeled one of the worst countries in the world in terms of the number of mines planted since the war broke out in 2011, with more than 12,000 killed in mine and explosive accidents. Syria has become one of the worst countries in the world in terms …

Ukrainian President Leonid Kuchma found himself in the company of a political titan, France’s President François Mitterrand, on a gloomy day in December 1994. “Young man, you will be tricked, one way or another,” Mitterrand told Mr. Kuchma, who was then the leader of a newly independent nation. Unsettled as …