systems, the very systems now being used to assault the ukrainian people. >> reporter: on the battlefield, the ukrainian military has now lost more tanks, aircraft, armored personnel carriers and artillery than russia has. however, by russia's own admission, their losses are mounting as well. the defense ministry claims nearly 500 russians killed. the ukraine says that number is actually nearly 6,000. >> translator: russian mothers are losing their children in a completely foreign country. >> reporter: ukraine and russia are still engaged in some diplomacy. delegations heading to belarus for a second round of talks. but both the u.s. and ukraine remain skeptical that russian president vladimir putin would negotiate for peace. >> we, of course are open to pursuing any reasonable path. but it's very hard to see any path when the bombs are dropping, the planes are flying, the tanks are rolling. >> when he is saying i want peace, this means get your