Three Ukrainian soldiers killed as violence continues in the east despite cease fire

Despite Ukraine's President Petro Poroshenko announcing a cease-fire, fighting continues in the east. In Seversk, 140 kilometers north of Donetsk, violent cl.\r\n\r\nUkranian authorities are investigating a helicopter crash that killed three crew members over the weekend. They were involved in a military operation against.\r\n\r\nUkraine says pro-Russian forces continue to attack government forces in the east despite a unilateral ceasefire introduced by President Petro Poroshenko a da.\r\n\r\nFighting continues in eastern Ukraine despite efforts to broker a peace deal. Authorities in Kiev announced on Friday a ceasefire to last until June 27, but .