We’re already fighting wars in Iraq, Afghanistan/Pakistan and Syria, but now it appears the U.S. has entered a fourth theater:

The Obama administration has intensified the American covert war in Yemen, exploiting a growing power vacuum in the country to strike at militant suspects with armed drones and fighter jets, according to American officials.

The acceleration of the American campaign in recent weeks comes amid a violent conflict in Yemen that has left the government in Sana, a United States ally, struggling to cling to power. Yemeni troops that had been battling militants linked to Al Qaeda in the south have been pulled back to the capital, and American officials see the strikes as one of the few options to keep the militants from consolidating power.

On Friday, American jets killed Abu Ali al-Harithi, a midlevel Qaeda operative, and several other militant suspects in a strike in southern Yemen. According to witnesses, four civilians were also killed in the airstrike. Weeks earlier, drone aircraft fired missiles aimed at Anwar al-Awlaki, the radical American-born cleric who the United States government has tried to kill for more than a year. Mr. Awlaki survived.

How many wars can our country stomach, both financially and mentally? We’re already talking about the enormous federal deficit, but we don’t have any problem launching air strikes in other countries. These strikes cost hundreds of millions of dollars and is money we never get back, unlike bailing out the auto industry.

The American people are also sick and tired of war. That feeling, which used to be isolated to the left, is now crossing the political spectrum. I really think in 2012 if a candidate came out and made ending all these “military campaigns” a priority, then that person would end up being a front runner. America is sick of spending money we don’t have on war and we are tired as hell of watching our young soldiers die.

Let the rest of the world take care of its problems and we’ll take care of our own.