

I wouldn’t call these “strong” alliances. Russia has a quite ambiguous relationship with Israel, including having let Israel bomb Iran allied/proxy militias in Syria, when Assad was still in power.
Russia and China are profiting off sanctions against Iran, as Iran cannot develop its industries for selling on western markets, instead selling raw or low level processed resources to Russia and China.
It is more of an alliance by necessity against the US as the main geopolitical rival and its proxies in West Asia as the main regional enemies to Iran.
Note how Netanyahu emphasizes the involvement of the US, while the US tries to distance itself from it.
Israel wants to drag the US into war against Iran, so Israel can watch as the US does the heavy lifting and has soldiers sent back in coffins.