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
MPs say there must be no way back for the former London mayor as he hints he could seek to rejoin the party.
President Donald Trump has requested that the Justice Department investigates whether the FBI infiltrated his campaign.
High pressure will help keep conditions relatively quiet through the course of this week.