'Oil', Alexander's personal story, is also the story of the Israeli oil industry; how Alexander was the first to bring to Israel non-Jewish oil businessmen from the USA; how these businessmen, along with Israel's 'National Oil Company' under Alexander's management, funded and executed oil drilling in Israel; and how Alexander's activities brought 'Signal', an international oil company based in the USA, to invest a large amount of money in Israel's 'National Oil Company', despite the Arab embargo. After the Yom Kippur War, Alexander sold the company for $16.5 million.