In mariupol, but the bombing of the defenders of the city continues. this is a war crime committed by the russian military literally in front of the whole world. russia s shelling of mariupol did not stop even when the u.n. secretary-general was holding negotiations in moscow. meantime, russia s renewed assault on eastern ukraine may not be going as well as moscow had hoped. a senior u.s. defense official says russia s military progress in the donbas region is slow as well as uneven as oren liebermann now reports, that s not the only sign that russia s invasion isn t going according to plan. reporter: near the city of kyiv, a russian tank flaw laid bare. the turrets separated from the body of the tank. a problem seen in other destroyed tanks as well. it s a design flaw in russian tanks that ukrainian forces have exploited. if the turret is penetrated and all our weapons penetrate
President is asking congress for more funding for ukraine. the bulk of that would go toward military assistance. russia s renewed assault on eastern ukraine may not be going as well as moscow hoped. a senior u.s. defense official says russia s military progress in the donetsk region is slow and uneven. and oren liebermann reports. reporter: near the city of kyiv, a russian tank flaw laid bear, turrets ss separated frome body of the tank. and it is a design flaw in russian tanks that ukrainian forces have exploited. if the turret is penetrated, particularly the javelin from top, that exposed ammunition will cook off immediately, it will go high order, and the whole exposed ammunition program