Make no mistake, it was Jihad

By MICHAEL MUKASEY, WALL STREET JOURNAL— If your concern about the threat posed by the Tsarnaev brothers is limited to assuring that they will never be in a position to repeat their grisly acts, rest easy. The elder, Tamerlan—apparently named for the 14th-century Muslim conqueror famous for building pyramids of his victims’ skulls to commemorate…