reporter: our army turned out to be one of the best in the world, and nobody was more surprised that the russians, he said. adding one more thing in english. [ bleep ]. reporter: matt rivers, cnn, ukraine. the ukrainian forces defending their country. peter zwack joins us now and retired major general, author of hunting the caliphate, america s war in isis. general zwack, ukrainian forces have retaken the village of mullah doe voir dire. yes, it s frankly quite unbelievable that kharkiv has stood like a castle between the