While this is an excellent book in many ways, it is disappointing in one sense. The real meat, the real "roots of the conflict", the story of how Zionism always intended to seize the country and transfer the residents, is in the middle of the book. They're concealed behind the later additions, such as the riveting accounts of Arafat and the 1993 Oslo Agreement when the Palestinians extended what Israel wanted but got none of the relief promised.
It took a check in the Index to rediscover the part played by Theodore Herzl, buried at p.137. From what I can tell, Hirst is accurate in describing the foundation of his movement and either balanced or perhaps even over sympathetic to Herzl and the early Zionists. You'll not be left with much sympathy for Herzl and his followers once you've seen what he was concealing from his public utterances.