However, Israel is not the USA's most important ally.
The US is not really an ally of Israel at all. The NATO countries are.
Japan and South Korea are. They have US troops and bases. The US does not send troops to fight in Israel's wars. The US just sends money.
Right, my point is that we're most important external input to Israel's decision-making process, not that we depend on them (beyond the political fact that the US electorate broadly supports Israel as an enterprise, and ranks the Gaza war at the bottom of important issues).
Israel was one of the US most important assets in the Middle East. At that time, gas/oil ran the world and it was the energy source. The US is simply stuck with that baggage. Meanwhile China is building solar like there is no tomorrow and essentially creating and monopolizing the new energy source.
However, Israel is not the USA's most important ally.
The US is not really an ally of Israel at all. The NATO countries are. Japan and South Korea are. They have US troops and bases. The US does not send troops to fight in Israel's wars. The US just sends money.