INTERNATIONAL PAPERS - Fri 22.05.15: Lots of talk of the US's strategy against I.S. today – or rather lack thereof. Editorials in the Washington Post and Daily Beast say there won't be a victory unless the U.S. allows Shi'ite militia to play their part. Meanwhile UK papers are full of Prime Minister Cameron's EU tour; seeking support for his reforms of the Union. And the Irish referendum on gay marriage gets attention from across the globe.