U.S. Accuses Russia of Using Chemical Weapons in Ukraine The New York Times
US says Russia used choking agents against Ukrainian troops, breaching chemical weapons ban CNN
Russia using chemical choking agents in Ukraine, US says BBC.com
Russians throng to display of Western 'trophy' tanks captured in Ukraine Reuters
Kremlin parades Western equipment captured from Ukrainian army at Moscow exhibition The Associated Press
Russia flaunts Western military hardware captured in war in Ukraine BBC.com