> As a strictly emotional thought, this makes me feel Israel is a country to cozy up to the strongest nation at the time. If the US falls from grace Israel will have no problem ‘switching’ sides to Russia.

That's in line with Israel's priorities, which first and foremost is its own survival.

At lot people kind of lazily expect Israel to act like your typical invincible Western state, but it's pretty vulnerable. It's also probably acutely aware of that fact, since within living memory all its neighbors vowed to destroy it and nearly did so.