Ukraine's PM resigns, complicating MH17 probe

Ukraine's prime minister resigned July 24 after his governing coalition collapsed, plunging the former Soviet state into political limbo as it struggles to quell a deadly rebellion in the east.        

The shock announcement added to an already chaotic situation in the rebel-controlled east, where international experts are carrying out a complex investigation into last week's downing of Malaysia Airlines flight MH17 that left 298 dead.
      
And the gravity of the situation facing the country was underscored by allegations from Washington that the US has evidence Russian troops are firing artillery on Ukrainian military positions from Russian soil.
      
Prime Minister Arseniy Yatsenyuk said he was stepping down over the "dissolution of the parliamentary coalition and the blocking of government initiatives" after several parties walked out on the ruling group.
      
The collapse of the ruling coalition paves the way for early elections to be called by President Petro Poroshenko within 30 days.
      
Although a truce has been declared by both rebels and government forces in the immediate vicinity of the vast crash site, heavy shelling was ongoing nearby including around Donetsk, just 60 kilometres (40 miles) from the scene.
      
Ukraine's army reported four soldiers killed over the last 24 hours in its offensive to retake the eastern industrial heartland from pro-Russian insurgents.
      
Countries which lost 298 citizens in the disaster are looking to deploy armed police to secure the impact zone, with Dutch Prime Minister Mark Rutte announcing the Netherlands was sending 40 unarmed police to the crash site.
      
"On the site it is still clear that...