Absolutely.
We should have mines and refining facilities ready to go for all of the materials we need.
However, perhaps not that bad of an idea to deplete the Chinese and other sources first?
We used to maintain a supply of critical materials but over time and listening to the BS of we all can get along, we ceased maintaining those stockpiles long ago. That was during a time when we had national leaders who actually thought of the US and defense first, not as an after thought. Yes there was an expense in doing that but it became more important to fund social BS items than to take care of the primary reason we actually have a federal government: defense.
We should have mines and refining facilities ready to go for all of the materials we need.
However, perhaps not that bad of an idea to deplete the Chinese and other sources first?
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No we need to start YESTERDAY!
A lot of the Chinese products are defective ON PURPOSE.