Updated

Ukraine's U.N. ambassador says the Malaysian airliner would not have crashed if Russia hadn't given pro-Russian separatists a sophisticated missile system that can hit planes.

Yuriy Sergeyev told The Associated Press in an interview Thursday that Russia bears responsibility for the disaster, along with the separatists, whom he called "terrorists."

The ambassador says that in intercepted phone calls, separatists first thought the plane was a military aircraft. After they went to the site and discovered it was a civilian plane, he says, they responded like "animals" and said the aircraft should have been flying over eastern Ukraine.

The calls haven't been verified.

The plane carried 295 people, and Sergeyev says that "from the ground, it's obvious that all the passengers — they were killed."