Ukraine's ambassador to Canada says her country is investigating more than 28,000 suspected war crimes, including the killing of 373 children by Russian forces.
Yulia Kovaliv told MPs at a House of Commons committee that Russia is using sexual violence as a weapon of war and said rape and sexual assault must be investigated as war crimes.
Canada's defence minister joined top military and defence leaders from 40 countries at Germany's Ramstein air base to work out ways to sustain military help for Ukraine.