Does America have enough weapons to support its allies?

WHEN AMERICA provided Ukraine with weapons to resist Russia’s invasion in 2022, many people asked whether it would also have the means to deter a Chinese assault on Taiwan. That question is all the more relevant now that Israel, another ally, is at war with Hamas. President Joe Biden that America will help its allies defend themselves, acting once again as the world’s “arsenal of democracy”, as President Franklin Roosevelt promised the country would be in 1940. Does Mr Biden have the weapons he needs to keep his word?