Russian Offensive Campaign Assessment, June 4, 2026 | ISW
Ukrainian President Volodymyr Zelensky sent an open letter to Russian President Vladimir Putin on June 4 proposing an immediate ceasefire
understandingwar.orgattended SPIEF as officials emphasized economic normalcy ahead of Russia Day, Zelensky's open letter urging an immediate ceasefire along Ukraine's frontline and possible in-person talks; Analysis by ISW the June 12 update signals a possible Oreshnik IRBM launch toward Ukraine in the next 24 to 48 hours. Operational pauses with continued Sumy Oblast activity; domestic measures labeling opposition groups and tightening controls ahead of elections. Observers' view also notes ongoing front tensions as authorities project strength.