Britain, Germany and France backed the United States and blamed Iran on Monday for an attack on Saudi oil facilities, urging Tehran to agree to new talks with world powers on its nuclear and missile programs and regional security issues. The Europeans issued a joint statement after British Prime Minister Boris Johnson, German Chancellor Angela Merkel and French President Emmanuel Macron met at the United Nations on the sidelines of the annual gathering of world leaders. But Iran ruled out the possibility of negotiating a new deal with powers, Iranian Foreign Minister Mohammad Javad Zarif tweeted on Monday, saying European partners have failed to fulfill their commitments under a 2015 nuclear pact. European leaders have struggled to defuse a brewing confrontation between Tehran and Washington since US President Donald Trump quit a deal last year that assures Iran access to world trade in return for curbs on its nuclear program. The United States reimposed sanctions on Iran and sharply tightened them. Iran has responded by gradually breaching nuclear commitments made in the 2015 accord and has set an October deadline to further scale back its nuclear obligations unless the Europeans salvage the pact by shielding Tehran’s economy from US penalties. “The time has come for Iran to accept negotiation on a long-term framework for its nuclear program as well as on issues related to regional security, including its missiles program and other means of delivery,” Britain, France and Germany said. Tension rose on September 14 following an attack on Saudi Arabia’s oil facilities, which Riyadh and Washington have blamed on Iran. Tehran denies responsibility, and Yemen’s Iran-aligned Houthi militias has said it carried out the attack. “It is clear to us that Iran bears responsibility for this attack. There is no other plausible explanation. We support ongoing investigations to establish further details,” Britain, France and Germany said. US Secretary of State Mike Pompeo thanked the European nations for their statement blaming Iran, saying, “This will strengthen diplomacy and the cause of peace.” Macron later met with Iranian President Hassan Rouhani. The path to reduce tensions in the region has become smaller and the moment has come for Iran to help defuse the crisis, Macron told Rouhani on Monday, his office said in a statement. The two leaders talked for more than 90 minutes. Neither took questions after their meeting. “The president said that in the current situation, the path of de-escalation was narrow, but more necessary than ever, and that the time had come for Iran to take it,” Macron’s office said in the short statement, adding that it was urgent to start a discussion on a security agenda for the region. Macron has led a European push over the summer to find a compromise between the United States and Iran and wants to use the UN meeting as an opportunity to revive diplomacy, though his efforts have stalled in recent weeks. When asked about Macron’s attempt to mediate, US President Donald Trump said: “We don’t need a mediator. ... They (Iran) know who to call.” The United States will intensify pressure on Iran, US Special Envoy for Iran Brian Hook said in New York on Monday. The United States was seeking to address the issue through diplomacy and a multilateral effort, and there was a role for the United Nations Security Council to play, Hook said without elaborating. In an interview with US network NBC on Monday, Johnson said Trump was “the one guy who can do a better deal. ... I hope there will be a Trump deal.” Trump flirted with meeting Rouhani while both are in New York for the UN General Assembly, but the chances appear slim. “We haven’t received any requests this time, yet, for a meeting and we have made it clear a request alone will not do the job,” Zarif told reporters in New York earlier on Monday. “A negotiation has to be for a reason, for an outcome, not just for a handshake.” He said there are conditions for a meeting - Iran has demanded the United States lift sanctions - and then there could be a meeting between Iran, the United States, France, Britain, Germany, Russia and China - the original parties to the nuclear deal - but there would be no bilateral meeting. Speaking after he arrived in New York on Monday, Rouhani said Iran’s message to the world “is peace, stability and also we want to tell the world that the situation in the Gulf is very sensitive,” the state news agency IRNA reported. Trump has criticized the nuclear accord, negotiated under then-US President Barack Obama, for “sunset” clauses by which some of its provisions will expire as well as for its failure to address Iran’s missile program and regional activities.