What options does Iran have now?

As Israel-Iran conflict continues, former US nuclear negotiator Alan Eyre told Al Jazeera that Iran's options in the face of the Israeli onslaught are "very bleak" and "very limited".

"They have to respond militarily just to save face domestically. But as we've seen, Israel can take the brunt of a lot of that, and it's very unlikely that Iran can cause enough damage internally in Israel to put any sort of pressure on Israel to stop bombing," Eyre said.

"Iran can use diplomatic means, but they don't have that many allies in the international community. But even if they did, Israel has shown that it's spectacularly unwilling to listen to international opinion when it's pursuing what it considers legitimate military goals."

Iran's best option, according to Eyre, is "to just ride it out" and do as much damage as they can to Israel to save face domestically.

"Then, once Israel stops bombing, try to take stock, come up with a new defence strategy, which possibly could include, in fact, trying to get a nuclear weapon, as opposed to just maintaining the capability for a nuclear weapon. And that's very worrisome," he added.