You're reading: CNN: US, Europe and Russia face off over Ukraine (VIDEO)

Donetsk, Ukraine - For a fourth straight day, unsafe conditions in eastern Ukraine kept international investigators from reaching the site of the Malaysia Airlines Flight 17 wreckage. Dutch forensic researchers and unarmed military police decided on July 30 that it was unsafe to travel to the crash site, said Lodewijk Hekking, spokesman for the Dutch Ministry of Justice and Security.

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