“Only 13 billion”?
With Europe and others more than matching US aid, that 13 billion will be huge.
More than just more Patriot missiles I think you will see many more patriot systems, enough to risk putting more closer to the front. Look what some ancient s-200 systems have accomplished.
If this happens, along with western aircraft and weapons systems and ammunition, the three main advantages russia has had, long range missile and drone attacks, air launched glide bombs, and artillery fire will be gone.
Meat and equipment wave attacks will become even more costly with even less results if not reversals, cost on Russian economy will soar even more, demand for manpower will increase not only the cost, but civil unrest over the war.
Can Ukraine push back the Russians, that is not a given, but increase loses and potential territorial loses may spark an internal crisis for putin, and that has been the scenario I have always thought the most likely.
Putin “loves” history, that is a repeated part of Russian history
Just hope for humanity’s sake that Putin isn’t succeeded by Dmitri Medvedev.