Ukraine's prime minister visited the city of Odessa, where the most recent surge of violence in Ukraine.

Sky News Correspondent Katie Stallard reports: In the city center, they were holding a memorial - singing hymns and holding religious icons. These people are predominantly pro-Russian, united against the government in Kiev - convinced that their language and their way of life are under attack from fascists and ultra nationalists. 

Prime minister Arseniy Yatsenyuk says as far as he is concerned, his country is at war with Russia. 'This is the war and we are the war time cabinet,' he says. 

More than 40 people died in Friday's violence.