As for Ukraine, they have the S-300 ABM, the Buks and Osa-AKM for air defence. (The Russian made Buk was one of the first systems able to intercept cruise missiles and US-made Lance tactical ballistic missiles, Harm anti-radar missiles and other airborne and ground-based precision weapons). Though quite old, they are still formidable and is one of the main reasons Russian Air Force has a low key role in the current ongoing conflict. (That + the NATO AWACS).
The problem Ukraine had was that they ran out of missiles for these platform and that's why the US provided them with the Patriot system. But since America did not have enough spare Patriot missiles, East Europe and the US also modified the Buk platform to fire the radar-guided AIM-7 Sparrow and the semi-active radar-guided RIM-7 Sea Sparrow, as well as the heat-seeking AIM-9M Sidewinder air-to-air missile.
We give everyone our junk after the US Marine Corps is done with it, and they get it 20+ years after the army, navy, and airforce consider them "obsolete".
Yes, two hundred and thirty years to even compete with the US. Please note, this is if the US goes full isolationist, and pulls all military forces worldwide back to the US and US territorial waters.
For example, people are talking about Rolls royce "reverse engineering" american engines, or the chinese. Another idea was using Saab planes. If saab planes are so great, why were they using american F-16s?
these aren't my numbers, but my experience with linking the sources of my data isn't great on HN.
The US pulling out of the World Order it builds and which underpins its massive wealth won't hurt anyone more than the US.
https://www.visualcapitalist.com/a-visual-breakdown-of-who-o...
1. https://www.khanacademy.org/economics-finance-domain/ap-macr...
Patriot systems were in use to shield Kyiv et al to great success.
I know it sucks to hear this, but if the US goes isolationist, there's not much anyone can do.