The European Commission also defended its interests, by saying on Wednesday it was "ready" to defend EU interests after Trump threatened to sever trade with Spain.

"We stand in full solidarity with all member states and all their citizens and, through our common trade policy, stand ready to act if necessary to safeguard EU interests," said commission spokesman Olof Gill in a statement issued in response to the threats.

In Paris, French President Emmanuel Macron said in a television address to the nation on Tuesday,"The United States of America and Israel decided to launch military operations. They were carried out outside the framework of international law, which we cannot approve."

He reiterated his call for an end to airstrikes and the resumption of diplomatic negotiations aimed at achieving long-term stability.

He also released clips of the address via X, where he also wrote, "We stand with our friends and allies in the region to ensure their security and territorial integrity. This is our responsibility."

Macron also confirmed that the French aircraft carrier Charles de Gaulle, which was in Sweden for military exercises, is being dispatched to the Mediterranean Sea.

United Kingdom Prime Minister Keir Starmer has ruled out British participation in offensive military action, insisting UK forces will not be drawn into what he described as "unlawful action".

'Deliberate' decision

In a Parliament session on Monday, Starmer said the government made a "deliberate" decision not to be involved in the initial strikes on Iran by the US and Israel, as "the best way forward for the region and for the world is a negotiated settlement".

"I will not commit our military personnel to unlawful action," Starmer told lawmakers. "President Trump has expressed his disagreement with our decision not to get involved in the initial strikes, but it is my duty to judge what is in Britain's national interest," he said, adding that the use of British bases is limited to defensive purposes.

Trump criticized Starmer for blocking the US air force from using Diego Garcia, the military base in the British territory of the Chagos Islands in the Indian Ocean, which has been leased to the US since the 1960s, for the initial military strikes.