UNITED NATIONS, Sept 23 (Reuters) - British Prime Minister Boris Johnson pushed for a new negotiation beyond a 2015 nuclear between Iran and world powers after attacks on Saudi Arabia's oil facilities, bringing his country closer to U.S. calls for a tougher deal with Tehran.
European leaders have struggled to dampen a brewing confrontation between Tehran and Washington since U.S. President Donald Trump pulled out more than a year ago from a deal that assures Iran access to world trade in return for curbs on its nuclear program.
The European powers party to the deal - France, Britain and Germany - have until now remained united despite pressure from Washington. But an attack on Saudi Arabia's oil facilities on Sept. 14, which Riyadh and Washington have blamed on Iran, is testing that unity. Iran denies responsibility for the attack on Saudi Arabia.
"How do we respond to what the Iranians plainly did? What the UK is doing is trying to bring people together and de-escalate tensions," Johnson told Sky News as world leaders gathered at the United Nations in New York.
"Whatever your objections to the old nuclear deal with Iran, it's time now to move forward and do a new deal."
A government spokesman later clarified that Johnson still supported the 2015 pact and wanted to find a way to bring Tehran into compliance.
Johnson was already at odds on Monday morning with French President Emmanuel Macron over who to blame for the attack, blaming Tehran directly.
Those words were in stark contrast to Macron, who has been extremely cautious not to point the finger directly at Tehran, fearing that it could increase tensions.
Macron has led a European push over the summer to find a compromise between Washington and Tehran and wants to use the U.N. meeting as an opportunity to revive diplomacy.
His efforts have stalled in recent weeks, with Iran reducing its commitments to the nuclear accord, and the United States refusing to ease sanctions that have strangled its oil exports, a mainstay of the Iranian economy.
SLIM HOPES FOR DIPLOMACY
The attack on Saudi oil facilities has complicated matters. Hopes at the end of August that Trump and Iranian President Hassan Rouhani could meet at the United Nations now seem slim.
Javad Zarif said there are prerequisites for a meeting - Iran has demanded the United States lift all 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. Macron on Monday also appeared to distance himself from the nuclear deal saying he was not "obsessed" with it.
"France is trying to put together proposals to avoid an escalation," he told reporters.
He reiterated previous ideas that any framework for future negotiations needed to focus on keeping a system in place to monitor Iran's current nuclear program, discuss Iran's post-2025 nuclear activities, its ballistic missile program and its regional influence.
"We need with our allies, regional actors and Iran to sit round the table and advance on these four points," Macron said.
Trump has criticized the earlier deal, negotiated under then-U.S. President Barack Obama, for "sunset" clauses under which some of its provisions expired as well as for its failure to address Iran's missile program and regional activities.
"He does want a new deal because the other deal was ready to expire - very short number of years left," Trump said in response to Johnson's comments.
Macron, Johnson and Angela Merkel are due to meet on Monday to coordinate their Iran strategy ahead of likely meetings with Trump and Rouhani.