After a year of war, all those who research the exchange of diplomacy between the US and Israel see the Biden-Harris administration and the government bureaucracy ("The Swamp") acting in a "Dr. Jekyll and Mr. Hyde" mode.
There are several popular explanations for this, among them:
1) The Swamp was not sure that Israel could actually win and did not want to be responsible for "saving it" from the "resistance".
2) The war was hurting the Democrat chances to win the elections.
3) The Swamp and the Democrat party still believe that "diplomacy" is the best way to solve problems.
4) The Swamp still dream of an Iran Deal
5) They are afraid the war will spill out over the Middle East and maybe even ignite a world war.
While all these reasons may be debated, the Democrats insist that they have Israel's best interest in mind. Yet there is yet another reason for the Democrats (The Swamp) siding with Israel's enemies, and unfortunately, it is much worse than the ones listed above.
The Democrat party, and the basic American political bureaucracy ("The Swamp") don't want Israel to win. They never have. Since 1967, the Swamp has acted in a schizophrenic manner towards Israel and has kept it from winning. This included the Republican Party.
When Israel, in 1973, had surrounded the entire 3rd army of Egypt and could have brought the Arab war efforts to unconditional defeat, Nixon (and Kissinger) forced Israel to give in and allow their release.
During the Ronald Reagan years the same swamp would not allow Israel to turn its war in Lebanon into a victory.
The reason the American Swamp, on one hand, lets Israel "defend itself", but on the other hand not to "win" is simple: It wants the Middle East, and Israel to continue to be reliant on the USA.
It fears that in winning this war, Israel wants to force the Middle East into a region that accepts it (on its terms) and ends continuous war. In doing so, the Israeli narrative of decades, that the Palestinians are the problem in the region and should not be given a state, will be shown to be true.
Israel will not be an ally the American Swamp can force to do what it wants.
The current Israeli government, especially the prime minister, Netanyahu, keeps saying that Israel will "transform" the Middle East.
The American Swamp likes the Middle East the way it’s been for the last 100 years and does NOT want it to change.