The late great Republican Sen. Arthur Vandenberg of Michigan had it right.

Partisanship, he said, should “stop at the water’s edge.”

Put another way: When a president takes a nation to war then it becomes imperative for a nation to rally behind the effort.

http://www.politico.com/story/2014/09/obama-un-address-111287.html?hp=l1

President Barack Obama went before the United Nations today to tell the world body that it’s time for the world to step up in the fight against the Islamic State. He didn’t sugar-coat it. He said the fight well could take years. He said ISIL is a tough and resilient foe. He also said that dozens of nations have lined up as part of a growing coalition to fight the terrorists.

But can the commander in chief perform his duty to protect Americans without much of the partisan carping that has plagued him to date? If his Republican foes choose to heed the words of one of their predecessors — the late Sen. Vandenberg — then there might be a unified nation rallying to fight a determined enemy.

Unity, of course, isn’t always the norm.

President Bush was able to rally the nation initially when he took us to war against the Taliban and al-Qaeda immediately after the 9/11 attacks. Much of the support evaporated when he expanded that fight into Iraq in March 2003.

President Clinton had his critics when he started bombing fighters in Bosnia and Kosovo.

President Truman heard the critics when the Korean War dragged on.

And Vietnam? Well, we know what happened there.

Barack Obama received congressional authorization to arm and train Syrian rebels. He’s consulted with political friends and foes in advance of launching the air strikes. Some critics will continue to say the strikes are too little too late.

Let us not undermine this necessary effort to destroy the Islamic State, however, with partisan carping.