June 6—As we mark the 55th anniversary of the assassination of Robert F. Kennedy, the former Attorney General and U.S. Senator, and the likely Democratic nominee for the 1968 presidential election, we must seize the opportunity to make the vision of peace expressed by President John F. Kennedy a reality.

The moment an explosion collapsed the Kakhovka dam, fingers were pointed at Putin and Russia, as the pro-war disinformation complex went into action....