Ukrainian President Volodymyr Zelensky on Monday vowed to find those responsible for the death of a Ukrainian soldier who was seen executed in a brutal video posted online. Zelenksy’s response comes after a video circulated showing a Ukrainian soldier being shot to death by Russians right after saying “Slava Ukraini,” or “Glory to Ukraine,” on the battlefield, according to multiple reports. The apparently freshly captured Ukrainian is seen smoking a cigarette in a ditch before a Russian yells out “you b—-,” a barrage of gunfire is heard and the soldier falls to the ground as the Russian adds “die, b—-,”...