Ukraine

At a news conference Monday, the head of Russian air and Space forces, Andrei Koban, said that analysis of the data refuted the widely-accepted conclusion that the aircraft was shot down by a BUK missile from within territory held by Russian-backed rebels.

"The fact that Ukrainian authorities have still not published the information they have, we can concluded that if it was a BUK that was launched at the (Malaysian Airlines flight), this must have been launched from a location with the Ukrainian forces," Koban said.

The Joint Investigation Team (JIT) image shows a "Venturi", which emits propellant gases, like a car exhaust.

Dutch prosecutors want more information from Russia about the Buk, which they say killed 298 people aboard Malaysia Airlines Flight MH17 in July 2014.

The West and Ukraine say Russian-backed rebels fired the Buk missile.

Russia argues that Ukrainian forces downed MH17. The Boeing 777, en route from Amsterdam to Kuala Lumpur, crashed in rebel-held territory.

Ukraine's president and Russian lawmakers hailed the move as a step toward peace in a war that has killed more than 8,000 people since April 2014.

A statement Tuesday from Denis Pushilin and Vladislav Deinego said the rebel-run areas of Donetsk and Luhansk provinces would put off the votes until Feb. 21. The two are the Donetsk and Luhansk envoys to the Minsk Group peace talks mediated by the Organization for Security and Cooperation in Europe.

The fighting between Russia-backed separatist rebels and Ukrainian government troops in the country's industrial heartland eased after a truce was signed in February. But despite pledges to withdraw heavy caliber weapons from the front lines, both sides seem to be engaged in recent heavy fighting.

The conflict has killed an estimated 6,400 people since April 2014, according to the United Nations.