European Union leaders decided on Wednesday to step up sanctions against Iran after Tehran’s missile and drone attack on Israel left world powers scrambling to prevent a wider conflict in the Middle East. The summit in Brussels is the first meeting of the EU’s 27 national leaders since Saturday’s attack, more than six months into the war on Gaza. Israel has signalled it will retaliate but has not said how EU leaders condemned the Iranian attack, reaffirmed their commitment to Israel’s security and called on all sides to prevent more tensions, including in Lebanon. “We feel it’s very important …