The fact is that America although unwilling to accept the lions share of responsibility for creating the problem of Israeli-Palestinian difficulties....for trading with Iran when America regarded Iran as its enemy...for supplying technology to Iraq when America was cozied-up-to by Saddam Hussein that the entire history of the United States from immediately after the Spanish American war is little more than interventionism taken to a ridiculous extreme in the name of well take your pick...Manifest Destiny or the Monroe Doctrine...
Why should America accept the lion's share of responsibility of the Arab-Israeli conflict? Because you say so? Or is it because it makes you feel all warm and fuzzy leaving everybody else out of it?
Who ruled Palestine prior to the 1947 partition? The Brits.
Who partitioned Palestine? The UN (Ya, Canada inclusive, or were you our bitch back then also?)
Who supplied arms to Israel when the five, count them, five Arab armies invaded Israel? Checkoslovakia, AKA The Soviet union.
Who played chess between Egypt, Syria, Jordan and Israel during the 6 day war? The Soviet Union
Who built and gave nuclear capabilities to Israel? The Socialist cesspool also known as France. Don't believe me? Ask Guy Mollet.
And by the way, before a former imperial power refers to Manifest Destiny, look at a map of Canada in 1867 and one today, then we'll chit chat.