I wonder how NATO feels about the US wasting its weapons on this silliness? The US is still (for the time being) the backbone of NATO's military assets. What happens if the US spends these assets and doesn't save enough for China and Russia? This will likely embolden them, the longer the Iran war goes on.

Costly weapons are clearly the best --- when use is limited.

But supply constraints can obviously become an issue with wider deployment and utilization.

Germany had better, more sophisticated weapons in WWII. The US had better supply. Who won?