European Union leaders are holding a summit in Brussels on Thursday for talks on the Iran war, energy prices, migration and an enormous loan for war-ravaged Ukraine being held up by Hungary. Many of those leaders have deflected entreaties by US President Donald Trump to send military assets to secure the Strait of Hormuz, a key waterway for the global flow of oil, gas and fertiliser. Rising energy prices because of the war and fears in Europe of a new refugee crisis have pushed leaders to make the Middle East one of the top priorities at the summit. The European Commission, the EU's executive branch, has floated the idea of a "toolbox" of measures to lower energy prices for leaders to discuss because no single policy will work across the myriad markets in the 27-nation bloc to blunt economic shocks from the war, according to a senior European diplomat who wasn't authorised to be publicly named so spoke on condition of anonymity. The summit will also focus on a long-brewing standoff