"The Iranian missile attacks on Israel must be condemned in the strongest possible terms," Scholz said, warning of "a further escalation of the already tense situation in the Middle East".

"Iran risks setting the entire region ablaze," he said in comments on social media platform X.

Iran’s missile attack on Israel is to be most strongly condemned. It threatens to further escalate an already tense situation in the Middle East. Iran risks a conflagration – this must be prevented. Hezbollah and Iran must immediately cease their attacks on Israel. 1/5

— Bundeskanzler Olaf Scholz (@Bundeskanzler) October 2, 2024

The foreign ministry said German citizens should leave Iran, warning against any travel to the Islamic Republic due to the "volatile and very tense" situation in the region.

The ministry said it had summoned Iran's ambassador over the attack.

A charge d'affaires responded to the summons as the ambassador was not in Berlin, ministry spokesman Sebastian Fischer told reporters.

Fischer rejected Iran's claim that the attack was a justified response to Israel's actions, including the killing last week of Hezbollah chief Hassan Nasrallah.

"We can only speak of self-defense when one is repelling an ongoing or imminent threat, otherwise it is revenge," he said, adding that "revenge is not a category in international law".

Neighboring Austria also summoned Iran's envoy to condemn the Islamic republic's "dangerous escalation in an already highly explosive situation", adding Vienna "stands by Israel's security".

"All parties are called upon to exercise utmost restraint to reduce tensions," the foreign ministry -- which has also told Austrians to leave Iran -- said in a statement.

Scholz said Germany would continue its efforts to broker a truce between Israel and the Iran-backed Lebanese group Hezbollah.

"Such a ceasefire must be the start of the full implementation of UN Security Council Resolution 1701, which stipulates that Hezbollah must withdraw from the border area with Israel," he said.

The German leader reiterated a call for a Gaza ceasefire ahead of the anniversary of Hamas's October 7 Al-Aqsa Flood Operation on Israel, in which around 1,140 Israelis were killed and around 240 taken captives.

The captives' "fate must be an incentive for everyone to reach an agreement based on the proposals made by US President (Joe) Biden", Scholz said.

Since Oct.7, Israel's brutal military campaign on the Gaza Strip has killed at least 41,689 people, 70% of them women and children, with another over 96,625 people injured, according to the Palestinian health ministry.

* This story was edited by Ahram Online.