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Netanyahu wants to keep talks focused on the deal
It's after Israel launched heavy strikes on what it said was Iranian military infrastructure inside Syria.
How serious is the escalation in hostilities between Israel and Iran? What's been the international reaction to the clashes in Syria?
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Iran's President Rohani says he will try to maintain a deal that works for his country but his threat was clear: if negotiations are unsatisfactory, Iran will recommence full uranium enrichment. European leaders, meanwhile, urge calm and restraint.
Many analysts believe Israel is painting a bad picture of Iran in advance of US President Trump pulling out of the Iran nuclear deal on May 12th.