Sweden's nonalignment policy has led it to serve as the protecting power for a number of nations who don't have formal diplomatic relations with each other for various reasons. It currently represents the United States, Canada, and several Western European nations in North Korea for consular matters. On several occasions when the United Kingdom broke off relations with Iran (including the 1979 Iranian Revolution, the Salman Rushdie affair, and the 2012 storming of the British embassy in Tehran), Sweden served as the protecting power for the UK.