The White House joined Kiev tonight in accusing Russia of a "flagrant violation of international law" after a convoy of lorries carrying humanitarian aid crossed the border with Ukraine without permission.
It said Russia should remove them immediately, or face further economic sanctions.
ITV News' Europe Editor James Mates reports from Washington:
More top news
Mr Abiy told the tens of thousands of supporters that change was coming and there was no turning back.
Members of the Rail, Maritime and Transport union on Arriva Rail North (Northern) walked out for 24 hours.
North Korea agreed to send home US war remains during a June 12 meeting between leader Kim Jong Un and President Donald Trump.