Its a fait accompli now. Iran is preparing for a war. Its probably what Netanyahu wanted (refer to his speech before US Congress).

The world have gone crazy.

Iran said to dismiss US, Arab calls for restraint — even if it sparks war

US warns Iranian attack will hamper relations with West; Israel bracing for multi-day assault; Netanyahu consulting with defense chiefs, considering ‘preventative measures’

Iran has rejected attempts by the US and Arab nations to de-escalate tensions in the Middle East, as Israel braces for an attack from the Islamic Republic and the Lebanese Iran-supported Hezbollah, saying they would strike the Jewish state even if it means war, the Wall Street Journal reported on Sunday.

Tensions between Israel and Iran have escalated since Wednesday, when Hamas leader Ismail Haniyeh was killed in Tehran in an attack Iran blamed on Israel, vowing to retaliate.

According to the Wall Street Journal report, foreign ministers from Jordan and Lebanon traveled to Iran in an attempt to diffuse the situation, but Iran told the Arab diplomats that it was set on striking back against Israel and “it didn’t care if the response triggered a war.”

https://www.timesofisrael.com/iran-said-to-dismiss-us-arab-nations-calls-for-restraint-even-if-it-sparks-war/