[Atlas Sneezed]

2. Defense spending must remain within set brackets

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At least in the absence of a congressional declaration of war.

[Remember_Salamis]

Actually, 7% GDP should be enough even w/o congressional approval (nearly $1 Trillion), but I guess you're right. Someday we may be facing a two-front war against two superpowers (EU and China, perhaps), and then we'd need to spend $1.5T.