national security and weapons systems is a slightly different issue. If weapons’ builders are not confident that

they can continue to obtain a key product in wartime, they might decide to avoid designing weapons that use

this key product, or they can go ahead and design the weapons and stockpile enough of the key high-tech
components or materials to last through an armed conflict. There is a U.S. Defense National Stockpile Center

that has built up reserves of many materials, from aluminum oxides, antimony, and bauxite to tungsten,

vegetable tannin extracts, and zinc (although many of these stockpiles have been reduced and sold in recent

years). Think every country is pro-trade? How about the U.S.? The following Clear It Up might surprise you.

CLEAR IT UP

How does the United States really feel about expanding trade?
How do people around the world feel about expanding trade between nations? In summer 2007, the Pew
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