The pro-Russian unrest in Ukraine has escalated in recent weeks to a level not seen since August 2014, even when it was at its peak, a top UN official has said. Calling all parties to cease hostilities, UN assistant Secretary General for Political Affairs, Taye-Brook-Zerihoun, said at a Security Council meeting that the number of people killed in the conflict increased to 9,333 in April from 9,160 in March 2016.