Russia invaded Ukraine, a non-NATO member. Ukraine borders Poland, Hungary, Slovakia and Romania, all NATO members.
It is possible that on the border between these countries, or elsewhere, Russian forces fight with NATO forces.
Will there be more than 4 deaths between Russia and NATO forces outside of Ukraine before July 1, 2023?
This resolves positively according to 3 credible media accounts of 5 or more deaths between NATO and Russian forces. These forces might be police or military.
These deaths can occur on either side anywhere in the world, between Russia and any NATO country.