Assume the worst - without Patriots the next war would be lost from the start. The Patriot system has proven its capabilities in Ukraine, but is far too expensive for a war.
Since 2015, Patriot has successfully eliminated numerous missiles and drones in the Yemen missile war. Israel has also used it on multiple occasions to deter drones, aircraft and other threats. The entire world is now threatened by Russia's missiles - and in the eyes of far-sighted military officials has been since the annexation of Crimea in 2014.