I think one must be careful before accusing of arming enemies etc. from whichever nations one resides especially Israel. As we all know the most morally defunct anti-Jews head Israel as can be compared directly to the un-Protestant/Christian leaders are and have been in place in the America Establisment of power for a very long time. These people are not "Christians" and only by Halacha "Jews" or one could argue "Erav Rav".
If any blame whatsoever must be displayed it must be towards these people heading the respective oligarchies. Funding both sides of wars has gone on for a very, very long time.
There are no "allies" in Geo-Politics but only interests. Hell, the American Establisment (with their British and Canadian co-horts) had armed, aided, funded, trained the building, destruction and rebuilding of all of Americas "enemies" and continue to do so today: Nazi and post Nazi Germany, the Entire Communist Block, the Arab/Muslim World and the "end poverty" of the Turd World.
I'm positive the anti-Jews in Israel have done the same with respect to their Arab/Islamic enemies. If Israel wanted to end this "conflict" it could do so in a week. The fraud war against Hamas is another example... Heck they are doing it now with the so-called Bolestinian Beoble. A question must be why? How much pressure (if any) comes from America and the international Jew haters to keep this fraud of a "conflict" going and the immense propaganda complex of lies of a Bolestinian Beoble and the war on the Jew.
Of course there are many theories but at base, these are internationally minded "elitists" with very little patriotism, appreciation towards their entire history nor any affilition with their ethnic/cultural/religious heritage. This is exactly, in my opinion, comparable to the Fabians running Britain and the Oligarchs of the inner CFR running America...
Did Israel arm its enemies... sure why not.... There are immense profits to be made through War...just ask Rockefeller, Ford, Bush, Clinton etc...etc. etc..