European Union leaders in Brussels on Wednesday appealed for calm to prevail as Israel mulls a response to a direct attack from Iran amid the prospect of escalating tensions in the Middle East. German Chancellor Olaf Scholz urged Israel not to retaliate against Iran with a “massive attack of its own” in an appeal for calm on his arrival at the two-day summit. Austrian Chancellor Karl Nehammer said “all efforts are now being made to contain the conflict so that it does not become a conflagration, so that there is no total escalation.” Scholz called on Israel to now use the successful defence ag…