In his strongest statement yet on Malaysia Airlines Flight 17, President Obama blasted pro-Russian rebels for stealing bodies and collecting evidence as amounting to a coverup of their alleged downing of the plane. “What is it they’re trying to hide?” Obama said. The president urged Vladimir Putin to compel the separatists to stop hampering the investigation. If Putin continues to back the rebels, “the costs for Russia’s behavior will only continue to increase,” he said. “The world deserves to know exactly what happened, and the people of Ukraine deserve to determine their own future.”