Not sure where you've learnt your history but it bears no resemblance to reality.
The USA have never participated in any of Israel's conflicts and Israel isn't a member of NATO so they're hardly likely to get involved.
The reason Egypt or Iran won't directly attack Israel is because they would lose. That's why Iran supports Hezbollah and Hamas in proxy wars.
They've not supported as far as troops in trenches together but they are allies and they have assisted Israeli operations in the past - obviously to protect their own interests.
Operation Nickel Grass was an overt
strategic airlift and
operation conducted by the
United States to deliver weapons and supplies to
Israelduring the 1973
Yom Kippur War. In a series of events that took place over 32 days, the
Military Airlift Command of the
U.S. Air Force shipped 22,325 tons of
tanks,
artillery,
ammunition, and supplies in
C-141 Starlifter and
C-5 Galaxytransport aircraft between October 14 and November 14, 1973.
[1][2] The U.S. support helped ensure that Israel survived a coordinated and surprise attack from the Soviet-backed
Arab Republic of Egypt and
Syrian Arab Republic.
[1] (from wiki)
Israel's military are more than capable of fighting off the various unstable Arabic nations they consider as neighbours. They don't need boots on the ground from the USA, but they have relied on military aid from the US, which has played a huge part in Israel being and continuing to be able look after themselves.
In terms of total money received,
Israel is the largest cumulative recipient of military assistance from the
United States since
World War II,
[25] followed by
Vietnam,
Egypt,
Afghanistan, and
Turkey.
[26] About three quarters of the aid is earmarked for purchases of military equipment from U.S. companies and the rest is spent on domestic equipment.
[27]
Since 1987, the U.S. has provided an average of $1.8 billion annually in the form of Foreign Military Sales (FMS), Foreign Military Financing (FMF) and funds to support research and development.
[2] A bilateral memorandum of understanding was signed in January 2001, at the end of the Clinton administration, under which defense aid was increased to $2.4 billion annually from $1.8 billion, while the $1.2 billion of economic aid would be eliminated. This was predicated on the basis of the defense aid being increased by $60 million per year until the full amount was reached in 2008, while the economic aid is decreased by $120 million per year until eliminated.
[3][28] In 2007, the United States increased its military aid to Israel by over 25%, to an average of $3 billion per year for the following ten-year period (starting at $2.550 billion for 2008, growing by $150 million each year).
[29] The package started in October 2008, when regular aid to Israel's economy ended.
[30]Officials have insisted the aid is not tied, or meant to balance, simultaneous American plans to sell $20 billion worth of sophisticated arms to its Arab allies in the region, including Egypt and Saudi Arabia.
[30] Former U.S. President
George W. Bush assured Israeli Prime Minister
Ehud Olmert that the U.S. would help keep a "qualitative advantage" to Israel over other nations in the region.
[29]
The United States is the largest single supplier of military equipment to Israel. According to the U.S. Congressional Research Service, between 1998–2005 the U.S. accounted for the vast majority of Israel's arms transfer agreements, accounting for $9.1 billion out of $9.5 billion worth of agreements.
[31] Israel deals directly with U.S. companies for the vast majority of its military purchases from the United States, though it requires permission from the U.S. government for specific purchases. Permission is not always automatic; for instance, in March 2000 it became known that the Israeli government had been refused permission to purchase
BGM-109 Tomahawk missiles.
[3]
Israel has the world's largest F-16 fleet outside the
United States Air Force. With the delivery of 102 F-16Is, scheduled through 2008, the
Israeli Air Force will have a total F-16 inventory of 362, in addition to 106 F-15s.
[32] (from wiki again)
I'd like to see ISIS try and invade Israel, because they would get rid of them in less than a month.
