In all, more than 500,000 tons of chemical gas agents were used in World War I. Some 500,000 troops were injured and some 30,000 died, including 2,000 American troops.

Ukrainian drones kept an eye on the Russian soldiers as they emerged one by one from the destroyed complex and into the custody Kyiv’s special forces. During the surrender, a Ukrainian soldier ...

But his heart stopped as he heard the sickening sound of a Russian soldier screaming: "The Ukrainians are here!" following the crack of machine gunfire. Within seconds, a hail of bullets was ...

Flags fly over the graves of Russian soldiers at a cemetery in Saint Petersburg ...

Ukrainian troops prepare to battle Russian fighters in Donetsk as the US agreed to restore its military and intelligence aid to Kyiv. Anadolu via Getty Images The recent fighting has forced ...

WASHINGTON − Three years ago, Russian troops surged into neighboring Ukraine, starting the biggest and bloodiest conflict in Europe since World War II. Tens of thousands have died, with Russia ...