Sunday's top stories, explained

Russian President Vladimir Putin has declared victory in the country's election - securing another six years in power. But within Russia and around the world, thousands of people staged resistance - with protests at polling stations and embassies. Also: Hundreds gather in Ottawa for the funeral of the six victims of a mass killing. Plus: The arts and cultural scene of Berlin is heavily funded by the German government. But fall-out over the war in Gaza is threatening its future.