If "direct armed conflict" erupts "between Russia and NATO," Russia's envoy tells Newsweek, "the United States will not be able to hide behind the ocean."
The proposed resolution "views the use of any tactical nuclear weapon by the Russian Federation, the Republic of Belarus, or their proxies, or the destruction of a nuclear facility, dispersing radioactive contaminates into NATO territory causing significant harm to human life as an attack on NATO requiring an immediate response, including the implementation of Article V of the North Atlantic Treaty."
Doesn't seem unreasonable. Any nuclear attack or disaster in Ukraine would affect neighboring countries.