If you're looking for a snapshot of India's hapless response to radical Islam, then look no further than Bombay-based cleric Dr. Zakir Naik. In India, the 44-year-old Dr. Naik—a medical doctor by training and a televangelist by vocation—is a widely respected figure, feted by newspapers and gushed over by television anchors. The British, however, want no part of him. On Friday, the newly elected Conservative-led government announced that it would not allow Dr. Naik to enter Britain to deliver a series of lectures. According to Home Secretary Theresa May, the televangelist has made "numerous comments" that are...