We hear from the BBC's David Stern about how the Ukrainian government is responding to the downing of Malaysian Airlines Flight MH17.

The Latest From Eastern Ukraine

Ukrainian President Petro Poroshenko, third left, chairs a Security Council meeting in Kiev, Ukraine yesterday. Poroshenko called the downing of a Malaysia Airlines passenger plane an act of terrorism and called for an international investigation into the crash, insisting that his forces did not shoot down the plane. From right, Ukrainian Defense MInister Valery Heletey, Head of the Security Council Andriy Parubiy, Prime Minister Arseniy Yatsenyuk, Petro Poroshenko, parliament speaker Oleksandr Turchynov. (Mykola Lazarenko/AP Photo/Presidential Press Service)

The Latest From Eastern Ukraine

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