For full coverage of the crisis in Ukraine, visit Flashpoint Ukraine.
The latest developments in the conflict between Russia and Ukraine. All times EDT:
12:02 a.m.: Al Jazeera reports that Russia has again accused Ukraine of attacking its settlements. Roman Starovoit, the governor of the Kursk region, said there were no casualties or damage to infrastructure.
Some information in this report came from The Associated Press, Reuters and Agence France-Presse.