It's pretty clear that either there is some big-time denial of reality among the "reality-based" community, OR there's a radically different paradigm in play among our brothers on the Left.
When I was a lad, the Cold War pitted Capitalist West against the Communist East. It was more than a disagreement about politics and economic systems. With exceptions such as Checkoslovakia's "Communism With A Human Face," we saw a more humanistic West and a more statist East. A side aspect in all this was the relentless Atheism of the Communists versus the freedom of religion, or more accurately, indifference toward religion of the Capitalists.
Overlapping the end of the Cold War was the beginnings of our current world conflict. Carter let the Iranian mullahs get away with acts of war against our embassy. Reagan pulled troops out of Lebanon after a Hezbolla car bomb flattened a barracks and killed a couple hundred Marines. Bush Sr. sent troops to Mogadishu to deliver pizza. And Clinton cut and ran after the "Blackhawk down" firefight. Add to this the defeat of the Soviets in Afghanistan. And a half-dozen major acts of terrorism against the US in the 1990s. This non-response convinced some Moslems with lots of petrodollars that the West was cowardly and corrupt--too soft to respond to a renewed efforts to establish the Califate (that hit the cosmic Pause Button sometime around 9/12/1683 at the gates of Vienna).
Now, let's suppose the Left is not as totally inept and boneheaded as they're acting. What we on the Right call "Islamofascism" may well be regarded by the Left as a mere "nuisance." Though this makes no sense to me, I'm going to try.
Let's think like a Lefty for a moment. First, we're grumpy because the "New Soviet Man" business didn't work out and that human nature isn't as malleable as we'd hoped. Second, despite the failure of worldwide Communism, we're convinced that Rationalism is more ultimate than Religion. The godless Atheism is kept under cover, but the Lefty sees all the evils of the world stemming from the backward followers of ancient myths. To the Lefty, there's little difference between the Fundamentalist Christian protesting the abortion clinic and the Fundamentalist Moslem blowing up the Israeli coffee shop. (No doubt, said Christian would be blowing up the abortion clinic if he could get his hands on some explosives.) They're both crime problems.
Suppose the Lefty thinks this business of Religion is just a phase an immature humanity just has to grow out of. When the rest of humanity catches up in its Evolution to the enlightened ubermench level of the Lefty, religion will decline as fast as the membership rolls of the Episcopal church. Suppose that the Lefty thinks that ultimately, the Islamist and snake-handling rednecks will be as extinct as the dodo bird.
Then QED. There's no need to start WW3 to defeat evil in the Islamist who straps bombs to his kids and sends them off to school. (That whole idea of good and evil is just so passe.) Simply appease the savages while they enslave or murder their neighbors, secure in the knowledge that we don't live in those countries, or in those immigrant ghettos of our cities. We'll just patiently wait for their children to evolve out of their pesky alliegence to Islam.
Conversely, suppose (like me) you're not so evolved nor enlightened. Suppose you know smart people who adhere to all sorts of odd ideas including religious ones. In this case, you won't just pat the savages on the heads secure in the knowledge that they'll "evolve out of" their murderous doctrines. It was the Conservative, Edmund Burke, who said that all that is needed for evil to triumph is for good men to do nothing.
This is why I can't take the cut-and-run Democrats seriously. I fear the next time the US has a president as feckless as Israel's Ehud Olmert (or most of those mentioned in the third paragraph of this essay.