I wonder where US interests lay. Is it in the Syrian regime? Maybe in Lebanon, Iran or Iraq.
US has, since the lesson learned at WWII, taken a side in most conflicts around the world.
Do you seriously believe that the monetary aid US gives to Israel (2bil$/year, again spent entirely in the US on US made products) is any more expensive than the military umbrella given to Japan or South Korea?
Do you think it's any more expensive than the American presence on NATO soil?
Israel has not demanded any American military intervention in its favor, ever.
And if talking about interests, I thought the interest of the US is democracy and a free western world.
With Israel being the only Democratic, Western country in the Middle East, it's easy to see why Israel is the closest ally of the US.
Unless, of course, your perceived American interests are oil, and not stupid intangibles like freedom and the right of the Jewish people to have a national home, and then you're right, American isn't acting rationally. Much better siding with Iran, you'll get your oil alright.
The behavior of Israel is not any more reckless than Russia's or America's own behavior in similar situation. It's not Israel that invaded Iraq, mind.
To the point, anyone slightly familiar with international politics will tell you that this support - far from unconditional - comes at a price of Israel following the American foreign policy.
Every Israeli move is considered in terms of the effect on the relationship with the US. Can you say the same about Israeli attitude towards France, for example? Of course you can't, because Israel doesn't give a rats ass about what their goverment thinks.
The Americans are a restraining factor, clear and simple.
The best example would be the way Israel reacted to the missiles launched at it by Saddam Hussein in '91. It didn't retalitate as a result of commitment to the US and it's alliance.
How does that fit your theory?
Ok, lets see. The US isn't directly involved, nor has it ever been, in any Israeli military conflict.
The aid US gives to Israel is some money - again, quite minor compared to the support in other countries, not to mention the war in Iraq for example - international policital support, and the ability to buy weapons with less restrictions than other countries.
I hardly see how the American taxpayer suffers from any of this.
The only way you could claim American taxpayer is "picking up the tab" is by assuming that without Israel, the Islam would not be hostile to the west or its own people.
I mean, as much as I like to think that without Israel the Arab world would become Democratic and prosperous, and group like Al Qaeda would have never been born, it's just bullshit.
Their sad state of affairs, and it's projection on the world, does not have anything to do with Israel.
So far, Israel is only getting stronger. In the worst years of Israel - back in the 50' up to mid 60', it was NOT supported by the US (no money, no arms), and until the late 70' it only received partial support. And yet, it has taken care of things just fine (Six Days war, for example).
Israel, considered to have the third or fourth strongest Army in the world, can more than handle its adversaries in the Middle East.
So there. Easy saying that as Americans, you pay for Israel and its actions. But in fact, you buy your rights at the Israeli helm for a dime, and some political support.
In other words, you bought yourselves a US outpost in the Middle East for cheap, with no need of American soldiers to defend it. That's not a bad deal.