TEL AVIV — A book on terrorism endorsed and touted by H.R. McMaster, the embattled White House National Security Adviser, calls Hamas an “Islamist political group” while failing to categorize the deadly organization as a terrorist group, and refers to al-Qaida attacks and anti-Israel terrorism as “resistance.” The work frames jihad as largely peaceful “means to struggle or exert effort,” such as waking up early in the morning to recite prayers. It argues that groups like al-Qaida and other terrorist organizations have hijacked the concept of jihad to wage warfare using such tactics as suicide bombings. The book, reviewed in...