The U.S. and Israeli strikes on Iran are driving instability across the Middle East and ushering in a new, more dangerous geopolitical era that only helps the EU’s adversaries, European Council President António Costa warned in a speech on Tuesday. “The international system is changing dramatically. A world in which power politics are back in play,” Costa told a meeting of the EU’s diplomatic corps in Brussels. “We know the new reality — a reality in which Russia violates peace, China disrupts