The Australian Greens are well known for their opposition to war. A cursory reading of their website makes it very clear to any observer that they are vehemently opposed to the United States and Israel's military action against the Iranian regime. Diplomacy and peaceful resolutions are the solution, not war.
Perhaps they envisage negotiations, brokered by an impartial third party. Moreover, the aggrieved Iranian regime isn't evil, but amenable to reason, if only they were given a chance to calmly talk about their legitimate grievances, all sides in this conflict would see the errors of their ways.
Foreign policy analysts who are actually across their brief on the subject of Iran think otherwise. As Times of Israel contributor Samuel Koltov argues, Iran cannot be treated as a rational, and logical state actor. Too many analysts fail to grasp Iran's religious-ideological worldview. Its leaders believe themselves to be preparing the world for the coming of the Mahdi, an Islamic Messianic figure. Their hostility to the United States and Israel is regarded as a religious obligation. They are engaged in an eschatological battle with religious enemies.
Nobody likes war. The immense death and destruction is tragic. The Greens fail to grasp that whoever negotiates a ceasefire with Iran will be negotiating with fanatics.
https://greens.org.au/campaigns/no-us-forever-wars
https://blogs.timesofisrael.com/stop-treating-iran-as-a-rational-actor/