One is that the entire 1980s era doctrine that they've built their military around has been shattered, in the air, at sea, and on land. Nothing they had on hand had an answer for fortified underground facilities, for dispersion as a general strategy, for cost efficient drones, and for an at-scale ballistic missile programme. Their ships can't approach, their planes can't operate freely over dispersed ambush air defences, and their military isn't built for countering fiber-optic FPV drones and one-way drones. Every aircraft will need to be underground or in hardened shelters. Every ship needs covered docking space, if they're operating anywhere in range of an enemy with these capabilities. And they need an actual answer to the issue of being able to penetrate and destroy underground facilities.

The second problem that they have is that they have to solve these massive problems and pivot their entire military establishment around the solutions they find, using a deeply corrupt and monopolistic military-industrial complex that exercises deep political influence both in government and in the military bureaucracy. This entity has already proven increasingly incapable of delivering next generation equipment across all domains. There is a reason that the US is operating ageing 80s equipment. The Zumwalt programme failed. The mobile artillery programme failed. The light tank programme failed. The LCS programme failed. They have failed to develop effective and practical hypersonics. They have yet to introduce a truly current-gen ship-to-ship missile. The constellation programme failed. Their 6th gen aircraft programme is limping along, massively behind the curve. Ukraine has generally found their drones to be impractical and ineffective. The next generation naval fighter was entirely cancelled. Both the F-22 and F-35 programmes have massive issues around cost, maintenance, availability, and more. On top of that, the US is continuing to suffer from a significant decline in industry, education, and research.

Given all this, the reality is that the US is not equipped to face any country wielding these next generation warfighting capabilities - they've gone from asymmetrical responses to the future of warfare.

So they can slowly rebuild their tomahawk inventory by hand over the next 5 years to bomb more schoolchildren if they like, it doesn't change the fact that their complete inability to fight Iran, China, or Russia has been exposed.