As a litigation lawyer, a renowned one at that, Philippe Sands knows the value of trusting your gut. And of chance connections. The genesis for his first book, the award-winning East West Street, was he says, a “pure accident” arising from a 2010 invite to deliver a lecture at Lviv University on the Nuremberg Trials and his work in helping to set up the International Criminal Court (ICC) in The Hague. He went because he wanted to track down the house of his maternal grandfather Leon who had grown up in the Ukrainian city, then called Lemberg, before he fled…