Robert Frost famously said that a liberal is someone "too broadminded to take his own side in a quarrel." You might want to put a picture of Mary Anne Weaver next to that quote. Weaver appeared on today's Morning Joe to discuss her New York Times Magazine cover article "Her Majesty's Jihadists." On the one hand, Weaver paints a striking portrait of the radicalization of young Muslims in the UK, reporting for example that there are more British jihadists than there are Muslims serving in the British military. But when asked what could be done about the problem, did Weaver...