LIVE | Oil prices skyrocket as Iran threatens new attacks after Trump rejects latest offer

Oil prices rose sharply again after Donald Trump rejected the latest Iranian proposal and crossed threats of further attacks.

The barrel of Brent consolidated above the $100 barrier, reaching $103.8 at the start of the European trading day, while WTI hovered around that line after rising to $97.8.

Iranian Foreign Ministry spokesman Esmail Baqai, said Monday that his country has called for "an end to the war in the region," the lifting of the U.S. naval blockade and the "release of assets belonging to the Iranian people."

In addition, the document warned that Tehran will not accept conditions that imply surrender and stressed that it will respond "strongly and decisively" to any new U.S. attack against Iranian vessels or interests in the region.

U.S. President Donald Trump said in an interview aired Sunday that he would only need two weeks to attack "every single remaining target" in Iran, adding that the Islamic republic is already defeated "militarily."

In statements to independent journalist Sharyl Attkisson, taped last week, the president again called the North Atlantic Treaty Organization (NATO) as a "paper tiger" and accused Washington's allies of failing to assist him in the campaign against Tehran: "They weren't there to help."

Israeli Prime Minister Benjamin Netanyahu said in an interview that Iran's enriched uranium must be "removed" before the U.S.-Israeli war against the Islamic republic can be called over.

"It's not over, because there is still nuclear material, enriched uranium, that has to be removed from Iran," he said.

Iran announced it had executed a man suspected of spying for the Israeli and U.S. secret services, the latest in a series of executions since the start of the war unleashed by Israel and the United States.

Erfan Shakourzadeh "was hanged for collaborating with the U.S. intelligence services and the Mossad," wrote Mizan, the judiciary's press.

An Israeli soldier was killed Sunday near the border with Lebanon, where fighting continues with the pro-Iranian terrorist group Hezbollah despite a ceasefire, the Israeli military announced Monday.

NCO Alexander Glovanyov, 47, "fell in combat," it specified.

France and the United Kingdom announced that their defense ministers will co-chair a meeting on Tuesday with their counterparts from some 40 countries willing to contribute to a mission to secure the Strait of Hormuz.

Iran reacted by warning that there will be a "decisive and immediate response" from its military in case of deployment in the Strait of Hormuz.

President Donald Trump will press his Chinese counterpart, Xi Jinping, on Iran when he visits Beijing, a senior U.S. official said.