“In light of the severe violation of the ceasefire carried out by the Iranian regime, we will respond with force,” the Israel Defense Force’s chief of general staff said, with Defense Minister Israel Katz saying he had ordered “intense strikes against regime targets in the heart of Tehran.”

Earlier on Tuesday, Israel said it had agreed to the ceasefire proposed by Trump, claiming it had “achieved all the objectives” of its military campaign against Iran. Iran’s foreign minister also indicated Tehran had agreed to the Trump plan, with Iran’s top security body later confirming the truce, issuing a statement on the “national decision to impose the cessation of war.”

On Monday evening, Trump announced that Israel and Iran had agreed to a ceasefire in what he dubbed the “12 Day War.” Early Tuesday, he declared the ceasefire was in effect, warning “Please do not violate it!”

Trump’s announcement that the ceasefire was in place came just after a flurry of attacks between Iran and Israel. Tehran launched multiple missiles that killed four people in Beersheba, according to Israel’s ambulance service, while Israel carried out a pre-dawn wave of airstrikes on targets across Iran.

Earlier this month, Israel launched military strikes at Iran, seeking to wipe out its nuclear program and top military brass. Trump, who backed Israel, brought the U.S. directly into the war on Saturday, bombing three Iranian nuclear sites. In response, Iran attacked a U.S. air base in Qatar on Monday, just hours before Trump declared the ceasefire.

‘Volatile and unstable’

Speaking at the Italian Senate on Tuesday morning ahead of traveling to Brussels for Thursday’s leaders’ summit, Italy’s Prime Minister Giorgia Meloni said: “This morning, the situation was unfolding exactly as we had hoped and worked toward. However, things have since become more complicated.”