Wikipedia

Germany: Chancellor Friedrich Merz urged both Israel and Iran to "refrain from steps that could lead to a further escalation and destabilize the whole region." He confirmed that Netanyahu had informed him of the operation in a phone call and stated that Germany is prepared to use "all available diplomatic means" to help de-escalate the conflict. Merz also stressed that "the aim must remain that Iran not develop any nuclear weapons", and reaffirmed Israel's "right to protect its existence and the security of its citizens." He added that German security services will step up protection for Jewish and Israeli sites domestically

Czech Republic: Foreign Minister Jan Lipavský called the strikes a "reasonable reaction" to Iran's threat of a nuclear bomb and support for Hamas and Hezbollah. He said he has "a great deal of understanding for ... military action aimed at preventing the production of a nuclear bomb," adding that "Iran has long failed to fulfill its obligations to the international community, is building up its nuclear program and, at the same time, uses rhetoric aimed at destroying the state of Israel

Argentina: President Javier Milei backed Israel's military actions against Iran, saying that "Israel accepts that other countries, but Iran doesn't accept that Israel exist.