By William Lacy Swing, Director General, IOM - We have seen some dark days in our world this year. In 2015 we have seen acts of sickening violence, the fury of nature, and – perhaps most poignant of all – the corpse of a Syrian baby boy, Aylan Kurdi, face-down on a Mediterranean beach. But while the world is full of darkness, it is not surprising that so many cultures have created festivals of light. Hindus recently celebrated Diwali, and last month was Loy Krathong in Southeast Asia, where candles were set afloat to give thanks. Soon it will be the holiday season for much of the Western world. Lights are already twinkling almost everywhere, from Central Park to Bondi Beach.