Darknight is correct.

The Palestinian tale of an ancient homeland stolen by Jews is dramatic and affecting, but it is a myth.

The truth is that there was never an Arab country of Palestine and that Palestinian Arabs were never a nation.

Prior to the re-establishment of Israel, Syria was considered the homeland of Palestinian Muslims, not the area around Jerusalem (ie, the West Bank).

What we think of as "Palestine" was stagnant and mostly barren. Its Arab population was small, nomadic and declining. Arab leaders even went so far as to reject the notion of a unique Palestinian Arab identity, and used the term "Palestinian" to refer to the region“s Jewish residents.

With Jewish development, however, came economic opportunity and better living conditions, which, in turn, made the area "attractive" to Arabs.

Finally, it should be noted that there are valid philosophical and strategic reasons for providing arms to Israel.

The middle east is very important region strategically for numerous reasons.
"Israel is the only country in the Middle East with true free elections, a free press,
freedom of religion, protection for individuals and minorities and other safeguards typical of a free society."

http://www.aipac.org/facts2.PDF

As a general rule, Israel engages in military action only when attacked by others.

On the other hand, many Arab leaders have openly expressed a desire to obliterate Israel. For example, last June, Palestinian television broadcast a sermon in a Gaza mosque in which the imam, Ibrahim Madi, made the following statement: "God willing, this unjust state Israel will be erased."

Many of these same "leaders" express similar sentiments towards the United States.

As such, it behooves us greatly to support the only nation in that region whose values and beliefs strongly mirror our own.