Poroshenko: 'Destruction of Crash Evidence Is Unacceptable'
Description:Outside the Dutch embassy in Kiev, Ukrainian President Petro Poroshenko paid his respects - the site a makeshift memorial for the nearly 300 people killed on Malaysian Airlines flight MG17. One hundred and ninety-three on board were Dutch. Poroshenko blamed the crash on neighboring Russia - which has denied the accusation. He also announced a ceasefire around the crash site.(1:00)