A piece of paper sits on the Colossus machine at Bletchley Park in Milton Keynes, Britain, September 15, 2016. Picture taken September 15, 2016. REUTERS/Darren Staples/File Photo Acquire Licensing Rights LONDON, Aug 24 (Reuters) - Britain will host a global summit on artificial intelligence at the old home of Britain's World War Two codebreakers in November as Prime Minister Rishi Sunak pitches Britain as global leader in guarding the safety of the fast-developing technology. The summit will take place on Nov. 1 and 2 at Bletchley Park, the site in Milton Keynes where mathematician Alan Turing cracked Nazi Germany's Enigma...