Iran's Supreme Leader Ayatollah Ali Khamenei warned that further U.S. attacks would incur a heavy price and could spark a regional war [1].

The warning follows an Iranian strike on a U.S. base in Qatar, signaling a sharp escalation in tensions that could destabilize the Middle East and beyond [1, 2].

Khamenei issued the statement from Tehran and said that the conflict has the potential to spread outside the immediate region [1, 2]. He framed the recent military action as a direct challenge to American presence in the area.

"We have delivered a slap to America’s face," Khamenei said [1].

The Supreme Leader specifically cautioned against the deployment or presence of American soldiers on the ground. He said that U.S. ground troops would be set on fire [3]. This rhetoric serves as a deterrent against potential retaliatory strikes from Washington.

Khamenei said that any attack by the United States would spark a regional war [2]. The threat emphasizes Iran's readiness to engage in a wider conflict if its interests or territories are targeted by U.S. forces.

While reports on the exact timing of the statements vary between Thursday and Sunday, the message remains consistent across regional reports [1, 2]. The Iranian leadership continues to signal that the cost of U.S. military intervention in the region will be severe.

"We have delivered a slap to America’s face."

The escalation reflects a strategic shift in Iran's approach to deterrence, moving from indirect proxy warfare to more direct threats against U.S. personnel. By explicitly mentioning a war that could spread beyond the Middle East, Tehran is attempting to raise the perceived cost of U.S. military retaliation to a level that may discourage Washington from responding with force.