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Ukraine's president called it a cynical move by pro-Russian separatists so that the peace process would fail.
When fighting broke out in April 2014, many people including health professionals fled the Luhansk and Donetsk Donbas regions. Those left behind were mainly elderly residents.
Russia seized the ships off the coast of Crimea in November last year after opening fire on them and wounding several sailors.
The Ukrainian Army announced a pullback from the town of Zolote, in the region of Luhansk, had begun on Tuesday night, whilst Russian-backed separatists said they were also complying.
A peace plan of sorts, proposed by German President Frank-Walter Steinmeier back in 2016, what does it consist of and where do Russia and Ukraine stand on its implementation?
20,000 cheered as soldiers marched despite the decision of the new Ukraine President Volodymyr Zelensky to cancel the military parade.
Vladimir Putin's controversial move to offer fast-tracked Russian passports to residents of separatist-controlled eastern Ukraine sparked outcry in Kyiv and other European capitals. What are the costs of such a move?
Moscow accused of backing separatist rebels
Nearly 13,000 people have been killed in five years of fighting in the border region between Russia and Ukraine.
Ukrainian president Petro Poroshenko has accused Russian president Vladimir Putin of avoiding negotiations to release Ukrainian sailors captured last month
Calls to end war in Ukraine and free political prisoners outside the FSB headquarters are shouted down by angry pro-Russian Serbs, who attempt to disrupt meeting and jostle journalists.