You missed the part where Jabotinsky states that it is perfectly natural that indigenous people must resist colonization, and therefore knowing that, the Zionists fully intend to kill them, and that about everything else they are lying. Obviously, therefore, as as is clearly expressed, Jabotinsky, along with all other Zionists were aware that the Palestinians were living in Palestine, that they were aboriginal to it and that it was their native land. He was also aware that Palestine was a Mandate A Territory of Britain.