US President Donald Trump will host French President Emmanuel Macron at the White House on Tuesday, with the Iran nuclear deal topping their agenda. A senior administration official told reporters at a briefing on Friday that Trump would also discuss other issues with Macron, including the joint military strike on Syria this month following a regime chemical weapons attack against the town of Douma on April 7. "The visit comes at a time of extremely close relations between France and the United States with regular and intense exchanges between the two presidents," an aide to Macron told reporters this week. The aim of the trip is to "continue and reinforce this dynamic," he added. "We hope that the visit will be useful in convincing and in advancing things in the right direction," Macrons advisor said on condition of anonymity, but he warned: "You shouldnt expect a diplomatic breakthrough." The 2015 reached between Iran, the US and five other world powers put curbs on Iran’s nuclear program in exchange for sanctions relief. Trump has called the agreement one of the worst deals ever negotiated. In January, he sent an ultimatum to Britain, France and Germany, saying they must agree to fix what Washington sees as the deal’s flaws or he would refuse to extend the critical US sanctions relief that it entails. He set a deadline for May 12 for the amendments to be made. US disarmament ambassador Robert Wood said on Thursday Washington had been having “intense” discussions with the three European allies ahead of the deadline, when US sanctions against Iran will resume unless Trump issues new “waivers” to suspend them. The Trump-Macron relationship has been one of the few stable elements in recent American foreign policy, with the French leader emerging as the privileged European partner for the White House. While Trumps relations with German Chancellor Angela Merkel have often been tetchy and he has clashed publicly with British Prime Minister Theresa May, the mercurial US leader has been consistently friendly with Frances 40-year-old centrist. Their warm ties will be on display from Monday when Macron becomes the first foreign visitor during Trumps term to be honored with a state visit, nine months after Trump was guest of honor during Frances national day on July 14 last year. "The friendship between our two nations and ourselves is unbreakable," Trump told Macron during his trip to Paris last July, which ended with their famous 25-second-long handshake. They have since worked closely on the fight against ISIS in Iraq and Syria and last week’s strike against the Syrian regime’s chemical facilities. Other issues set to be discussed include the Palestinian-Israeli conflict, US talks with North Korea, and relations with Russia following the poisoning of an ex-Russian spy in Britain. During his visit, Macron will visit the State Department, take part in a state dinner at the White House and demonstrate his English-language skills -- a rarity for a French president -- in an address to a joint session of Congress on Wednesday.