pete budda—jej has been declared the winner of the iowa democratic caucus by the narrowest of marginsbut bernie sanders is also claiming victory. the party will hold a candidates‘ debate in a few hours‘ time. botswana has held its first major auction of licences to hunt elephants. a hunting ban was scrapped last year, as elephants and humans increasingly come into contact. the united nations says nearly six hundred thousand civilians have fled fighting in northwest syria since the start of december. it's warning that many more people could be be forced out as syrian government troops continue their advance against the rebels. at ten o'clock. clive myrie will be here with a full round up of the days news. first, the islamic state group may no longer control territory in syria or iraq but it hasn't given up the fight. undeterred, some of its army of global jihadists survived, and have taken sanctuary in the most remote corners of the globe. so so where has the islamic state group gone after the caliphate? in this bbc news exclusive quentin sommerville followed the trail of one attack, p