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.
It's probably fair to say that this is not going to go down well in Ukraine...
U.S. Ambassador Marie Yovanovitch has called on Ukrainian authorities to replace the chief of the Specialized Anti-Corruption Prosecutor's Office (SAPO), Nazar Kholodnytsky.
And here's a report from RFE/RL's Russian Service and Current Time on how the anniversary was marked in Moscow.