Another anniversary of 9/11 is near. It's been nearly six long years since a catastrophic attack on our shores, and we've understandably turned to infighting and second-guessing — about everything from Guantanamo to wiretaps.

But this six-year calm, unfortunately, has allowed some Americans to believe that "our war on terror" remedy is worse than the original Islamic terrorist disease.

We see this self-recrimination reflected in our current Hollywood fare, which dwells on the evil of American interventions overseas, largely ignoring the courage of our soldiers or the atrocities committed by jihadists. Our tell-all bestsellers, endless lawsuits and congressional investigations have deflected our 9/11-era furor away from the terrorists to ourselves.

All this tail-chasing comes only with the illusory thinking that the present lull is the same as perpetual peace. Have we forgotten that experts still insist that another strike will come, carried out by those already here or shortly to enter the United States?

Look back at jihadist near-misses in this country since 9/11 — along with a disturbing recent Pew poll that found one in four younger Muslim-Americans approve, at least in certain circumstances, of suicide bombing to "defend Islam" — and the dire predictions seem plausible.

Recall the jihadists arrested in Albany and near Buffalo, N.Y., or the recently uncovered plot to attack Fort Dix in New Jersey. Past foiled targets included the Sears Tower in Chicago, the Brooklyn Bridge, JFK Airport in New York and the New York Stock Exchange.

Some angry loners — mouthing jihadist propaganda or anti-American slogans — simply act on their own to try to kill Americans. Iranian-American college student Mohammed Reza Taheri-azar hit several University of North Carolina classmates with his car in March 2006. Last summer, Omeed Aziz Popal was arrested for a hit-and-run rampage in San Francisco. And Naveed Afzal Haq is charged with shooting women last summer at a Jewish center in Seattle.

Recall also the American residents and citizens with direct connections to al-Qaida's terrorism network.

American Jose Padilla (aka Abdullah al-Muhajir) was just convicted by a jury of terrorist conspiracy. Khalid Abu-al-Dahab, a key al-Qaida recruiter, operated out of California's Silicon Valley. "Sheik" Omar Abdel Rahman advised Egyptian jihadists from his American jail cell — after his conviction for helping to plan the 1993 World Trade Center bombing. U.S. visitor and asylum-seeker Ramzi Yousef was convicted of the same crime. His partner, the indicted American citizen Abdul Rahman Yasin, fled to pre-war Iraq. Another American, Adam Gadahn, regularly narrates al-Qaida communiques.

Khalid Sheik Mohammed — mastermind of the 9/11 mass-murder and the Daniel Pearl decapitation — studied in North Carolina for a number of years. Egyptian-American and U.S. Army veteran Ali Mohamed helped plan the destruction of American embassies in East Africa. Convicted "20th-hijacker" Zacarias Moussaoui attended flight school in Oklahoma.

Two things seem clear here. One, there have been, and are now, plenty of Islamic terrorists and their helpers in the United States. And, two, we are dangerously shortsighted about the ongoing threat they pose.

Meanwhile, Islamic-American organizations and sympathetic civil-liberties associations file lawsuits about supposed American security excesses and illiberal vigilance.

Last fall, for example, several imams were taken off a flight from Minneapolis when the group's erratic behavior scared fellow passengers. After the incident, one of the so-called "flying imams," Arizonan Omar Shahin, called for boycotts of the involved airline and legislation to stop supposed anti-Muslim profiling.

But the brazen Shahin, it turns out, is more than just a bullied Islamic scholar; he has helped raise funds for an organization that the U.S. government has tied to Hamas.

Our experts are too often in denial or disarray. Former White House counterterrorism adviser Richard A. Clark, former CIA operative Michael Scheuer and former CIA director George Tenet now make widely publicized strident attacks on ongoing efforts to stop terrorists and level charges against others — and each other. They rarely talk with any humility, much less apprise us of what we can learn from their own failures to stop the 9/11 jihadists during their long tenures.

In short, six years of quiet at home since 9/11 have fooled some into thinking that terrorists pose little danger here — or that we may be doing far too much rather than too little to stop such killers. No matter that this past week a jihadist plot to destroy U.S. facilities in Germany was thwarted.

Others make the mistake of endlessly re-fighting the past six years — who let al-Qaida grow?; who "lost" Osama bin Laden?; who fouled up postwar Iraq? — instead of concentrating on the storm ahead.

Before 2001, the excuse for American complacence and in-fighting was naivete. But what will be the reason for the next successful strike against us by the jihadists?

More naivete — or is it simple hubris?

Victor Davis Hanson is a classicist and historian at the Hoover Institution at Stanford University. Reach him at author@victorhanson.com.