It was a very different world when Khan became London’s first Muslim mayor last May. The son of Pakistani immigrants, Khan, a charismatic human rights lawyer and proud feminist, seemed the embodiment of the diverse, global city he was elected to lead. Less than a year later, in the aftermath of Brexit, Khan finds himself in a battle to preserve “open” London. The mayor has been unwavering in its defense, courting the business community while arguing that a hard Brexit, separating the city from the EU, will be disastrous for Britain’s engine of growth.