Britain’s Prime Minister, Theresa May, has called for the European Commission to ensure it makes a “proportionate” response to America’s section 232 duties on steel and aluminum. The EU already has retaliatory duties ready to go from June 20. Prime Minister May’s concerns are driven in part by U.K.’s exposure to the case. Britain’s $438 million of shipments of the products covered were just 0.9% of total exports to the U.S. in the 12 months to April 30 vs. 1.9% for the EU ex the U.K. Britain will also want to ensure it maintains good relations with America to protect a pos...