Joint Nuclear Exercise Involving Belarusian Iskander-M (defence24.com)

• Putin and Lukashenko jointly directed the nuclear exercise for the first time.
• Belarusian Iskander-M missile launched; Russian strategic forces tested multiple systems.
• No confirmed deployment of actual nuclear warheads in Belarus.

"Putin and Lukashenko jointly directed a nuclear exercise for the first time. The decisive phase occurred on 19–20 May 2026. Belarusian Iskander-M missiles were tested. Russian forces launched ICBMs and hypersonic missiles. No hard evidence of actual nuclear warheads in Belarus."