It is a dark day of commemoration in Ukraine. Tuesday marks the fourth anniversary of Russia's invasion. The Kremlin claimed Ukraine was mistreating Russian citizens, but there is no evidence of that. Neither side releases many combat statistics, but some estimates put the number of people killed close to two million. Many western countries, including Canada, have pushed the Kremlin to make peace but that hasn't happened yet. Nathaniel Dove looks at how Ukrainians are marking the day and when they'll be able to stop fighting.