If Barack Obama had been president in 2002, he says he would have stayed out of Iraq and pursued al Qaeda in Afghanistan. But that “war of necessity” is now morphing into the biggest foreign policy headache of our time, a Hydra of impossible choices in Pakistan, the whole Middle East and beyond.

Even as Hamid Karzai agrees to an election runoff with who-knows-what prospects of national unity in Kabul, the perception of a growing gulf between the American military and the White House stirs echoes of the 1964 movie, “Seven Days in May,” a what-if about a conspiracy to unseat a President led by the head of the Joint Chiefs who considers him too soft on America’s enemies.

In today’s 24/7 media world, politicking against a President can be done openly, not so much by active-duty generals, as in the movie, but by retired military talking heads like Gen. Anthony Zinni on TV abetted by scare headlines online and elsewhere.

(“Pentagon Chief: Obama Afghan Decision Can’t Wait” screams Drudge yesterday linking to a Reuters report quoting Defense Secretary Gates as saying something quite different–that the President’s strategy won’t depend simply on the election: “I see this as a process, not something that’s going to happen all of the sudden…the president will have to make his decisions in the context of that evolutionary process.”)

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