The latest from Ukraine's National Security and Defense Council:
Can't confirm location or date of this video, which was posted today and is being circulated as further evidence of tank movements in Donetsk.
Putin has accused pro-Kyiv and Ukrainian forces of responsibility for the fighting that has prevented investigators from returning to the site of the Malaysian airliner crash site in rebel-held eastern Ukraine. He was quoted by RIA-Novosti as saying "the opposite site is constantly shelling this territory, and that does not permit comprehensive work at the site of the crash."
A number of Western government and intelligence sources have accused the Russian-backed separatists of shooting down the commercial airliner in mid-July, killing all 298 people aboard.