jamessaft1.jpg–James Saft is a Reuters columnist. The opinions expressed are his own.–

Financial markets have plenty to be worried about but their latest concern — a trade war between the United States and China — should not be on the list.

Aligned self interest and a knowledge on both sides of the causes of the Great Depression should limit matters to a kind of trade war Kabuki, a highly stylized piece of theatre in which the United States shakes its fist and China responds in kind but no blows land.

The Obama administration on Friday slapped tariffs of 35 percent on the import of auto tires from China, reacting to a surge in imports and complaints from the United Steelworkers union. It also acted on the recommendation of the independent U.S. International Trade Commission.

China duly responded, announcing investigations into subsidies made to U.S. chicken producers and auto products, as well as vowing to take its case to the World Trade Organization.