The United States produces about 75% of its steel and aluminum needs. Canada sells us about 12% and Mexico some 8% while the rest we get from Japan, S. Korea and the European Community. China corners a full 2% of our needs for these metals. What is Mr. Trump after? A victory in the rust belt! Europe is answering back but it really is not too worried just because Mr. Trump has taken a stand outside of the world of his tuits. Mr. Trump has an ace up the sleeve. By 2020 the US will be a major oil exporter. China´s needs for gas and oil will sky-rocket while ours will tend to decline. China´s capacity to retaliate are really few since she can risk to sacrifice a 2% steel and aluminum export to protect commercial relations with a future oil and gas supplier. Spaniards and other Europeans know this. That´s why their warning of retaliation ends up with threats to counterattack with heavy duties on Levis´ jeans a la second-hand, cheddar cheese and Burger King´s American soul food. Mr. Ryan can relax and keep smiling.