The US State Department is in conversations with the Ukraine government to stipulate requirements for a humanitarian aid convoy from Russia to cross borders.
Deputy spokesperson Marie Harf said the International Red Cross would take control of the aid and distribute it once the convoy crossed the border into Ukraine.
More top news
Crowds of people gathered in Sandringham on Sunday to catch a glimpse of Princess Charlotte as she arrived for her official christening.
The Chancellor has "found" the £12bn of benefit cuts promised in the Tory election manifesto - here's what we know about the savings so far.
The pair, including a man in his 50s, were struck around midday on the Pen y Fan mountain range in Powys, mid-Wales.