France, Germany and the United Kingdom said Sunday they are ready to work with U.S. and allies to stop Iran’s retaliatory attacks.

The three countries' leaders were "appalled by the indiscriminate and disproportionate missile attacks launched by Iran against countries in the region, including those who were not involved in initial US and Israeli military operations", said the joint statement.

"We will take steps to defend our interests and those of our allies in the region, potentially through enabling necessary and proportionate defensive action to destroy Iran's capability to fire missiles and drones at their source," it added.

"We have agreed to work together with the US and allies in the region on this matter."

Iran has launched a series of missile and drone strikes on several Gulf countries, saying it is targeting U.S. bases, after being hit by U.S.-Israeli missile strikes from Saturday.