EUROPE - If it’s a big, controversial issue in Europe, it’s probably on the agenda for the June leaders’ gathering. Migration and asylum. Eurozone. Brexit. Poland and the rule of law. A trade war with Washington. The EU’s long-term budget. After a year-long reprieve, in which election results in the Netherlands and France and solid economic growth gave the European political mainstream a boost, EU leaders will face a gathering storm at their June Council summit next week. “It’s a huge summit; let’s see how long it will take,” an Austrian diplomat said. “There are a lot of very divisive things to deal with.”