Round two of Ukraine, Russia, US talks in Abu Dhabi on Sunday

Another round of Russia-Ukraine negotiations will take place in Abu Dhabi later this week, also involving the US as an intermediary, following on from trilateral talks held over the weekend in the capital, CNN reports. US mediators said that while progress had been made, a breakthrough has yet to be reached. Fighting from both sides continues, and issues like security assurances and territory disputes remain as sticking points. The next round of negotiations is set to begin on Sunday.