Ukrainian forces are transitioning away from smaller-scale action intended to shape the battlefield and beginning to attack in force.
Ukraine faces a Catch-22: it needs to assure the West that it can achieve a major military success, but it needs Western support to do so.
Russia and Ukraine are preparing for offensives this spring in Crimea, a region of strategic and symbolic importance that has been occupied by Moscow since 2014.
Russia and Ukraine are bogged down by mud as they battle for control of Bakhmut. Warmer conditions in April could lead to a break in the stalemate.