Ever wanted to read about the origins of the Israeli-Palestinian conflict? Well, here you go. I would say I wish I'd read this years ago, and I do, but I couldn't have--it was only published in 2017, and relies heavily on recently-declassified documents and memoranda from the British Foreign Office and related ministries that have come to light only in the past few years.
Regan's book focuses on the 20-year period from near the end of World War I to the doorstep of World War II, with a particular emphasis on developments of the 1920s and early 1930s. His subject is the Question of Palestine from the perspectives of the British and those who had to deal with them regarding it, primarily the Palestinians and Zionist Jewish settlers, with guest appearances from France, the United States, and the newborn Soviet Union.
If one doesn't know the history of Palestine prior to World War II, going back to the beginning of the Zionist movement in the 19th century, one is apt to have _extremely_ distorted views of the Arab-Israeli conflict. It would be hard to escape.
I can say that in the U.S., the popular notion--which we're not so much taught as permitted to infer from a carefully curated set of factoids repeated in the culture--is that "the Jews" wanted a homeland back in Palestine, and that there were some token gestures in this direction between the World Wars by the British, but it was half-hearted, and then World War II and the Holocaust happened and finally at long last we all, except for the hateful Arabs, recognized the cosmic justice of awarding them a nation-state as a necessary but ultimately inadequate acknowledgment of the injustice of anti-Semitism.
I knew there were problems with the above, but now I can put it simply. The story above is a fairy tale. It's not so much false as so symbolic and narratological that one shouldn't confuse it with history. To do so is somewhat like trying to situate and reconcile the King Arthur stories with the early medieval history of England. The trouble is that people do indulge such practices with Israel/Palestine, and therein lies not just mischief, but dispossession, death, and the nonstop roiling cauldron of politics that is real life.
(To head off a perverse misreading of the above--no, I'm not saying World War II or the Holocaust didn't happen. I'm saying that Israel would have been established as a state _even if they hadn't_. It's like there are two histories; one for people who know who Chaim Weizmann was, and why he was important, and one for the unwashed masses.)
Regan's book reads like a Ph.D. thesis lightly adapted to book form. In many ways that's good--such an explosive subject requires the academic scruples he brings to the subject. There are about 200 pages of main matter, with 50+ pages of bibliography and end notes.
Bernard Regan makes a strong case that Britain's support for the Zionist cause went no further than their colonial and military objectives in preserving access to the Suez Canal (to the southwest) and British India (to the east). The activities of Irgun and the Stern Gang, not covered here, suggest strongly that the Zionists were well aware of this at the time. In a must-read essay, "The Perils of Partition", Christopher Hitchens mentions that Britain wrapped up the Indian colonial project about a year ahead of schedule, and I have to wonder if this was in part due to exasperation with resistance movements in both Palestine and India. As Hitchens's essay title notes, the U.K. left both countries with the dubious gift of partition--though it is worth noting that Israel has been far more successful at geographically assimilating territory and subjecting its population than Pakistan, Bangladesh, or post-1947 India has.