This ends our live blogging for June 3. Be sure to check back tomorrow for our continuing coverage.
U.S. State Department spokeswoman Marie Harf speaking at a June 3 press briefing in Washington, D.C.:
"We're disturbed by reports, including those by the OSCE, that combined Russian separatist forces launched coordinated attacks overnight against Ukrainian positions near Donetsk city and Pisky, Luhansk, and Maryinka. We’re now seeing unconfirmed reports that the town of Maryinka may have fallen. These attacks are on the Ukrainian side of the cease-fire line. They have reportedly utilized grad-rockets and other heavy weapons that should have been withdrawn under the February Minsk plan."
"Any new attack and aggressive action by combined Russian separatist forces is unacceptable and contravenes the Minsk agreement. Russia bears direct responsibility for preventing these attacks and implementing a cease-fire. Any attempts to cease additional Ukrainian territory will be met with increased costs."