Saudi Arabia's defence minister delivered a blunt message to Iranian officials in Tehran last month: take President Donald Trump's offer to negotiate a nuclear agreement seriously because it presents a way to avoid the risk of war with Israel.

Any Israeli campaign on Iran without the U.S. support will face severe limitations given the long distance between the two countries.

President Donald Trump believes his administration is “very close to a solution” on an Iran nuclear agreement and he has personally warned Israeli Prime Minister Benjamin Netanyahu not to disrupt the talks,