We are now closing the live blog for today, but we'll be back again tomorrow morning to follow all the latest developments. Until then, you can keep up with all our other Ukraine coverage here.
From overnight:
Russian President Vladimir Putin said that he and U.S. President Donald Trump briefly discussed the recent naval confrontation in the Black Sea between Ukrainian and Russian naval ships. Read the full story.
Barring any major developments, that ends the live blogging for today.