Iceland’s prime minister is this week expected to face calls in parliament for a snap election after the Panama Papers revealed he is among several leading politicians around the world with links to secretive companies in offshore tax havens. The financial affairs of Sigmundur Davíð Gunnlaugsson and his wife have come under scrutiny because of details revealed in documents from a Panamanian law firm that helps clients protect their wealth in secretive offshore tax regimes. The files from Mossack Fonseca form the biggest ever data leak to journalists. Opposition leaders have this weekend been discussing a motion calling for a general election – in effect a confidence vote in the prime minister. On Monday, Gunnlaugsson is expected to face allegations from opponents that he has hidden a major financial conflict of interest from voters ever since he was elected an MP seven years ago.