I just finished reading Thomas Friedman's 1989 Beirut to Jerusalem and then went online looking for other material written around the same time, almost a generation ago. The Roots of Muslim Rage, written by Bernard Lewis for The Atlantic in 1990, still rings true.

The struggle between these rival systems has now lasted for some fourteen centuries. It began with the advent of Islam, in the seventh century, and has continued virtually to the present day. It has consisted of a long series of attacks and counterattacks, jihads and crusades, conquests and reconquests. For the first thousand years Islam was advancing, Christendom in retreat and under threat. The new faith conquered the old Christian lands of the Levant and North Africa, and invaded Europe, ruling for a while in Sicily, Spain, Portugal, and even parts of France. The attempt by the Crusaders to recover the lost lands of Christendom in the east was held and thrown back, and even the Muslims' loss of southwestern Europe to the Reconquista was amply compensated by the Islamic advance into southeastern Europe, which twice reached as far as Vienna. For the past three hundred years, since the failure of the second Turkish siege of Vienna in 1683 and the rise of the European colonial empires in Asia and Africa, Islam has been on the defensive, and the Christian and post-Christian civilization of Europe and her daughters has brought the whole world, including Islam, within its orbit.

Lewis also talks about what happened that eventually resulted in the alliance of the Left with Islamic radicalism:

German philosophy, and particularly the philosophy of education, enjoyed a considerable vogue among Arab and some other Muslim intellectuals in the thirties and early forties, and this philosophic anti-Americanism was part of the message.
After the collapse of the Third Reich and the temporary ending of German influence, another philosophy, even more anti-American, took its place -- the Soviet version of Marxism, with a denunciation of Western capitalism and of America as its most advanced and dangerous embodiment. And when Soviet influence began to fade, there was yet another to take its place, or at least to supplement its working -- the new mystique of Third Worldism, emanating from Western Europe, particularly France, and later also from the United States, and drawing at times on both these earlier philosophies. This mystique was helped by the universal human tendency to invent a golden age in the past, and the specifically European propensity to locate it elsewhere. A new variant of the old golden-age myth placed it in the Third World, where the innocence of the non-Western Adam and Eve was ruined by the Western serpent.

This is just a taste -- there is much more; the article is divided into 2 pages and I highly recommend reading the whole thing.