The fourth round of negotiations between Ukrainian and Russian delegations on a possible ceasefire has been paused until Tuesday, said an adviser to the Kyiv government on Monday. “A technical pause has been taken in the negotiations until tomorrow,” said Mykhailo Podolyak, the adviser, in a Twitter post. “For additional work in the working subgroups and clarification of individual definitions. Negotiations continue.” A day earlier, Russian and Ukrainian officials said that there appeared to be signs of a possible deal on a ceasefire in the near future, although few details were provided. The previous round of negotiations yielded few results. “According to my personal expectations, this progress may grow in the coming days into a joint position of both delegations, into documents for signing,” Russian negotiator Leonid Slutsky, a member of the Duma, told state-run media on Sunday. Podolyak, meanwhile, said that Moscow “started to talk about something and not just …