Sadiq Khan dropped a major hint about his future political ambitions this morning, refusing to deny he has his eye on No. 10 Downing Street. Speaking to American news outlet CNBC, the London Mayor suggested he could do a better job as PM than his mayoral predecessor Boris Johnson. Asked whether he wants a fourth term in City Hall, “I'm enjoying being the mayor of London. I think I've got the greatest job in the world. Is only about a year ago where I won that historic record breaking mandate, so let’s wait and see.” Asked whether he could “see...