The European Union is likely to impose tariffs on $4 billion of U.S. imports including planes and plane parts next week in retaliation over U.S. subsidies for aircraft maker Boeing BA.N , EU diplomats said on Friday. A majority of EU governments have already backed the tariffs, which are expected to be put in place after a meeting of EU trade ministers on Monday. “I would expect the tariffs to be imposed next Tuesday or Wednesday,” an EU diplomat said. The move will echo U.S. tariffs on European goods over subsidies for Boeing’s rival Airbus AIR.PA . Combined, the two cases represent the world’s largest ever corporate […]