How should this concern the USA? Perhaps in this way: let the Israelis do their worst. Let the Palestinians hate America as much as they want. In fact, America is probably safer in an atmosphere of maximum distrust and belligerence. In that kind of atmosphere we have our guard up, we are suspicious of Palestinians and other Arabs coming into our country. As we should be. In the previous era, pre-9/11, we were sanguine. We thought the Arabs loved us. We were wrong. They want to murder us as much as they want to murder Israelis. Discord in the Middle East probably will make the USA a safer place, because it will hopefully prevent us from sagging back into our own rock-stupid-ClintOOnesque-sense-of-security.
To Israel I say: fight on.
To the USA I say: vigilance.
To believe this is to buy the Arab propaganda. They want Israel gone period. The Palistinian state they want is the one now called Israel.
How should this concern the USA?
Because we are sworn to protect Israel as the only democracy in the area. Israel was created by the UN with our support. We must protect them.
Even with graduate degrees, Arab types rant like juvenile delinquents; and I believe this is how they behave within their own culture. They lie, cheat and turn on each other, whenever it looks brighter. One reason Israel has won militarily, is the Arab tendency to surrender under fire, turn brother on brother, etc.
Clearly Israel and America SHOULD do an immediate reality check, and ready themselves for battle against terrorists, NGO, States, whatever. Anyone with an active brain cell knows Arafat has been a terrorist, since his meetings with fellow travelers, in Cuba in the 60s. The past compulsion to negotiate with known terrorists is now functionally obsolete.