The massive amount of foreign aid that America supplies to the Arab/Muslim enemy is a form of blackmail in that it forces Israel to continue accepting American aid in order to keep up or stay ahead in the Mideast arms race.
America currently provides Egypt and Saudi Arabia with BILLIONS of dollars of the most advanced armaments on the planet.
While it is true that homegrown Israeli weaponry and technology is very often superior to anything America manufactures, it would be disingenuous to think Israel is currently capable of meeting all her armament requirements on her own.
Yes, Israeli radar, avionics, computer, drone, and other technologies are the best in the world.
At the same time, we must recognize the limitations that currently straddle Israel.
For example, Israel doesn't manufacture it's own jet engines. Had the Lavi gone to production, it's powerplant would have been supplied by an American firm.
Israel just doesn't have the heavy weapons manufacturing infrastructure necessary to supply huge quantities of howitzers, tracked armored vehicles, and most importantly, state of the art powerplants necessary to maintain air superiority.
The latest American blackmail against Israel comes in the form of refusing to provide spare parts for American manufactured helicopters that the IAF purchased.
American contracting firms such as General Dynamics, General Electric, Pratt and Whitney, Boeing, Lockheed, etc. etc. benefit immensely from supplying Israel's enemies with armaments and then forcing Israel to in turn purchase American weapons systems with funding that comes under the guise of U.S. military 'foreign aid' to the Jewish nation.
U.S. military 'foreign aid' to Israel is actually a giant welfare check for America's weapons industry.