[MattGaiser]

I would have assumed that Ukraine was getting all manner of secret help, from intelligence to weapons to CIA training for resistance members to build bombs. What military has ever live streamed its entire military strategy?

[Nomentatus]

But it's interesting that two countries at loggerheads - Russia and the US - are both agreeing to keep some US special weapons secret. I'm thinking of anti-aircraft lasers according to an IEEE article. Russia because it would be embarrassing to admit it's technologically being skunked; and the US... because they want to beat the Russians, not embarrass them?

Iran (and Russia) loves to brag about half-baked new military tech, out of sheer narcissism. The US, as you suggest is historically much better at hiding its hand and springing surprises when war comes.