FILE - Volunteers with the right-wing paramilitary Azov National Corps stand to attention less than a month before the country's presidential vole during a march along the main street in Kiev, Ukraine, on March 2, 2019. The Ukrainian forces who made a determined last stand in a Mariupol steel mill against Russian troops were a mixture of seasoned soldiers, border guards, a controversial national guard regiment and volunteers who took up arms in the weeks before Russia's invasion. (AP Photo/Efrem Lukatsky, File)