Reuters - France demanded on Wednesday that Iran refrain from entering a new phase of �especially worrying� reductions to Iran�s obligations to a 2015 nuclear deal with world powers.

�Iran must abstain from crossing an especially worrying new phase of new measures that could contribute to an escalation in tensions,� French foreign ministry spokeswoman Agn�s von der Muhll told reporters in a daily briefing.

She was responding after Iranian President Hassan Rouhani said on Monday that Tehran was working on advanced IR-9 centrifuges for uranium enrichment. Those centrifuges do not appear in the 2015 accord.

Reporting by John Irish; Editing by Catherine Evans