An Iranian court acquitted a former nuclear negotiator of spying charges today but convicted him of acting against the Islamic government.

A senior Iranian official appeared to cast doubt today on Tehran’s latest commitment to a total suspension of nuclear activities capable of producing weapons-grade uranium, saying some centrifuges will continue operating.

Iran has given the UN a written promise to fully suspend uranium enrichment, according to diplomats and Iranian officials, in an apparent bid to dispel suspicions that Tehran wants to build a nuclear bomb.