川普急了，可能是稀土卡脖子卡得太紧，和中国稀土谈判不顺利，也可能军工等美企业着急有关？

The US's existing stockpiles of rare earth metals are not sufficient to meet defense needs in the event of a complete supply cutoff from China, according to the New York Times. While they may cover near-term demand, analysts estimate they would only last a few months. The Pentagon is working to expand domestic production and build reserves, but it's a long-term effort, says NPR. 

 

Here's a more detailed breakdown:

• Short-Term Stockpiles:

  The US defense industry and the Pentagon have stockpiles, but they are not enough to sustain defense companies indefinitely, according to defense industry analysts, says the New York Times. 

   
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