As you settle into the Oval Office, Mr. President, may I offer a suggestion? Please do not try to put Afghanistan aright with the U.S. military. To send our troops out of Iraq and into Afghanistan would be a near-perfect example of going from the frying pan into the fire. There is reason to believe some of our top military commanders privately share this view. And so does a broad and growing swath of your party and your supporters.

    True, the United States is the world's greatest power - but so was the British Empire a century ago when it tried to pacify the warlords and tribes of Afghanistan, only to be forced out after excruciating losses. For that matter, the Soviet Union was also a superpower when it poured some 100,000 troops into Afghanistan in 1979. They limped home, broken and defeated, a decade later, having helped pave the way for the collapse of the Soviet Union.

    It is logical to conclude that our massive military dominance and supposedly good motives should let us work our will in Afghanistan. But logic does not always prevail in South Asia. With belligerent Afghan warlords sitting atop each mountain glowering at one another, the one factor that could unite them is the invasion of their country by a foreign power, whether British, Russian or American.

    I have believed for some time that military power is no solution to terrorism. The hatred of U.S. policies in the Middle East - our occupation of Iraq, our backing for repressive regimes such as Egypt and Saudi Arabia, our support of Israel - that drives the terrorist impulse against us would better be resolved by ending our military presence throughout the arc of conflict. This means a prudent, carefully directed withdrawal of our troops from Iraq, Afghanistan, Saudi Arabia, Qatar and elsewhere. We also need to close down the imposing U.S. military bases in this section of the globe, which do so little to expand our security and so much to stoke local resentment.

    We cannot evade this reckoning. The British thought they could extend their control over Iraq even while pulling out their ground forces by creating a string of bases in remote parts of the country, away from the observation of most Iraqis. It didn't work. No people that desires independence and self-determination wishes to have another nation's military bases in its country. In 1776, remember, 13 little colonies drove the mighty British Empire from American soil.

    In 2003, the Bush administration ordered an invasion of Iraq, supposedly to reduce terrorism. But six years later, there is more terrorism and civil strife in Iraq, not less. The same outcome may occur in Afghanistan if we make it the next American military conflict.

    Mr. President, the bright promise of your brilliant campaign for the White House and the high hopes of the millions who thronged the Mall on Tuesday to watch you be sworn in could easily be lost in the mountains and wastelands of Afghanistan.

    The Nobel Prize-winning economist Joseph E. Stiglitz has estimated that the war in Iraq will have a total cost of more than $3 trillion. That war has clearly weakened our economy and our armed forces even as it has made the national debt soar. The Bush administration committed itself to Iraq before the recession. Today, with our economy teetering, does the Obama administration believe that it is time for yet another costly war in yet another Muslim country?

    I'm aware that some of my fellow Americans regard me as too idealistic. But sometimes idealism is the best realism. And at a minimum, realism and idealism need not be contradictory. The invasion and occupation of Iraq has not only angered Iraqis who have lost family members, neighbors or homes; it has also increased the level of anger throughout the Muslim world and thrown up obstacles to our political leadership in that deeply important part of the planet.

    Like you, Mr. President, I don't oppose all wars. I risked my life in World War II to protect our country against genuine danger. But it is the vivid memory of my fellow airmen being shot out of the sky on all sides of me in a war that I believe we had to fight that makes me cautious about sending our youth into needless conflicts that weaken us at home and abroad, and may even weaken us in the eyes of God.

    As you have noted, Mr. President, we take pride in our soldiers who conduct themselves bravely. But as you have also said, some of these soldiers have served two, three and even four tours in dangerous combat. Many of them have come home with enduring brain and nerve damage and without arms and legs. These troops need rest, rehabilitation and reunions with their families.

    So let me suggest a truly audacious hope for your administration: How about a five-year time-out on war - unless, of course, there is a genuine threat to the nation?

    During that interval, we could work with the U.N. World Food Program, plus the overseas arms of the churches, synagogues, mosques and other volunteer agencies to provide a nutritious lunch every day for every school-age child in Afghanistan and other poor countries. Such a program is now underway in several countries approved by Congress and the United Nations, under the auspices of the George McGovern-Robert Dole International Food for Education and Child Nutrition Act. (Forgive the self-serving title.) Although the measure remains painfully underfunded, with the help of other countries, we are reaching millions of children. We could supplement these efforts with nutritional packages for low-income pregnant and nursing mothers and their infants from birth through the age of 5, as is done here at home by WIC, the Special Supplemental Nutrition Program for Women, Infants and Children.

    Is this proposal pie-in-the-sky? I don't think so. It's food in the stomachs of hungry kids. It would draw them to school and enable them to learn and grow into better citizens. It would cost a small fraction of warfare's cost, but it might well be a stronger antidote to terrorism. There will always be time for another war. But hunger can't wait.

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    George McGovern, a former senator from South Dakota, was the Democratic nominee for president in 1972.