World leaders have been gathering in Saudi Arabia to pay their respects after the death of King Abdullah. <br /><br /> The visiting officials met Abdullah’s successor, King Salman, in Riyadh. <br /><br /> Russian Prime Minister Dmitry Medvedev was among those who travelled to the Kingdom. Morocco’s King Mohammed VI also offered his condolences. <br /><br /> The UK was represented by prime minister David Cameron and Prince Charles, while Francoise Hollande came to lead the French tribute. <br /><br /> US President Barack Obama – en-route to India – called King Salman from Air Force One to express his sympathies. He will cut short his Asia visit to be in Riyadh on Tuesday. <br /><br /> King Abdullah was buried in an unmarked grave, in keeping with tradition, after Friday prayers.<br /><br /> Other remembrance ceremonies are planned over the coming days.