THE ISLAMIC STATE has sent new shock waves through the world by capturing more than 200 Syrian and Egyptian Christians. The terrorist group’s gruesome killing of other hostages has heightened concerns among many about the fate of these hostages.

Meanwhile, the Obama administration and the Iraqi government reportedly have shelved their long-publicized plans to try to retake Mosul. The second-largest Iraqi city has been under IS occupation since last summer. If true, the news would further embolden the IS terrorists. They probably will further consolidate their occupation of the Syrian and Iraqi territory, which is already larger in size than the United Kingdom.

Meanwhile, the IS campaign of terror goes on. The New York Times describes it as a “rampage reminiscent of Tamerlane or Genghis Khan.” The reporter Anne Barnard depicted the horror as “entire villages emptied, with hundreds taken prisoners, others kept as slaves; the destruction of irreplaceable works or art; a tax on religious minorities, payable in gold.”

The last time the Middle East saw such repugnant sights was during the American invasion of Iraq, spotlighted by Abu Gharib; and of Afghanistan, where American soldiers not only slaughtered countless innocent Afghan and Pakistani men, women and children, but showed little concern for the humanity of their victims. Nothing symbolizes the dehumanization of the Afghans as the pictures of U.S. soldiers peeing before rolling cameras on the corpses of Afghan guerrillas. The pictures, like those from Abu Gharib, weren’t isolated events. We know from leaked reports of CIA atrocities in Iraq and Afghanistan that high echelons of the Bush and Obama administrations were aware of these war crimes or condoned them after learning about them.

Leave aside the morality of the two administrations’ insensitivity toward these Muslim peoples and their values. What worries me most is that this see-no-evil, hear-no-evil attitude is a stumbling block to the search for a solution to the U.S.-Islamic imbroglio. In fact the same attitude has led American policy makers to decide that the Muslim rage against America and the West is actually confined to a fanatic fringe of Muslim societies. Studies after studies have shown that more than 80 percent of people in most Muslim societies are seething with anti-American rage. The IS and other Muslim terrorist groups enjoy tacit or vocal support of large numbers of people in these societies.

Most Americans apparently don’t know about it because American politicians and flag-waving American news media are more interested in mud-slinging against Islam, variously described, than looking inward into America’s role in the confrontation. In a prayer breakfast three weeks ago Obama condemned the IS for “twisting and distorting” religion for their heinous acts. But he also reminded his audience that Christians had engaged in similar crimes in the past.

“[R]emember,” the president said, “that during the Crusades and the Inquisition, people committed terrible deeds in the name of Christ. In our home country, slavery and Jim Crow all too often was justified in the name of Christ.”

Nobody questioned the validity of his remarks, but his words triggered an avalanche of fury among Western politicians and intellectuals. Rudy Giuliani blamed the president’s upbringing for his reference Christian extremism. “I do not believe,” added the former mayor of New York, “that the president loves America.”

Sen. Ted Cruz also didn’t dispute the veracity of Obama’s comments. But the Texas Republican blasted him for not mentioning Islam as the source of IS terrorism. “The words ‘radical Islamic terrorism’ do not come out of the president’s mouth,” fumed the presidential hopeful, “The word ‘jihad’ does not come out of the president’s mouth. And that is dangerous.”

“Any use of the word ‘Crusade,’’ said the University of London historian Thomas Asbridge, “has to be made with great caution.” Asbridge, who has written a series of books about medieval history, didn’t say why “great caution” needs to be used in references only to the Crusades, but not to Muslim extremism.

Their own neocolonialist attitudes and policies toward the Muslim world remain hidden to most Americans and Westerners in their dangerous blind spots.   Americans, especially American policy makers, need to remember that the IS, and its predecessor Al Qaeda in Iraq, didn’t exist before the uncalled for and catastrophic Iraq war. The IS, appallingly cruel as it is, emerged as the only defender of the members of Iraq’s Sunni Arab minority who had survived the horrifying slaughter, ethnic cleansing and persecution by the successive U.S.-backed Shiite governments. Iraq’s sectarian Shiite leaders had collaborated with the George W. Bush administration in its invasion of Iraq. Most of them had returned to Iraq from exile “on the backs of American tanks,” said Columbia University scholar Rashid Khalidi.

In Afghanistan, Pashtun guerrillas, who organized as the Taliban militia, never had an argument with the United States until it invaded and occupied their country. In fact the CIA collaborated with Pashtun guerrillas, then known as the mujahedeen, or freedom fighters, during their 1980s war against the Soviet invaders. The U.S.-led war in Afghanistan not only made the Taliban hostile to America, but also led to the birth of the Taliban in Pakistan.

An of course, 9/11 was a direct fallout of the 1991 deployment of U.S. troops in Saudi Arabia. Osama bin Laden, a Saudi citizen who was America’s ally in the Afghan war against the Soviets, was among the most vocal Saudi voices against the U.S. troop presence in “the land or Muhammad.” Expelling “the Crusaders” from the Muslim holy land was the first item on bin Laden’s agenda, as he outlined in his 1996 fatwa. Seventeen of the 19 plane hijackers on 9/11 were Saudi citizens.

In April 2003 when America finally pulled out its troops and base from Saudi Arabia (under pressure from the Saudi monarchy, scared by 9/11), Al Qaeda groups in the Middle East celebrated it as a vindication of 9/11.

Western politicians and intellectuals are deluding themselves and their people by blaming Muslim terrorism on Islam, “radical Islam,” “Islamic extremism,” “a twisted [Islamic] ideology,” and so forth. Of course some of the Muslim terrorism stems from Muslims’ sectarian and ethnic fissures. But most of it has been a reaction to foreign occupation.

A study of Britain’s prestigious think tank Chatham House has found that foreign occupation and domination is the wellspring of modern terrorism: Palestinian, Lebanese, Tamil, Kurdish, Buddhist, Chechen, Kashmiri, and so forth. In one of the most comprehensive studies of suicide terror attacks during 1980-2004, Robert Pape found that 95 percent of them were targeted at what the terrorists considered foreign occupation of their or their allies’ homelands.

In his landmark book Dying to Win, the University of Chicago professor recalls that Arabs learned suicide terror techniques from Hindu Tamils in Sri Lanka and Marxist Kurds in Turkey. He says terrorists use religion as an inspiration only when they have “a religious difference” with the occupying or hegemonic power.

I’m afraid that even if the Obama administration’s repeatedly articulated plans to “defeat ISIL ever materialized, that of itself wouldn’t diminish Muslim terrorism against America and its allies. The Bush and Obama administrations succeeded in expelling Al Qaeda from Afghanistan, only to see it spread to the Middle East and north and West Africa. America and the West have to come to grips with the root cause of the Muslim rage against them: foreign occupation and hegemony.