UPDATE 1-Iran says it will inject gas into centrifuges at Fordow on Wednesday

Iran will take a new step in reducing commitments to a landmark 2015 nuclear deal on Wednesday by injecting gas into 1,044 centrifuges at its Fordow plant, President Hassan Rouhani said on Tuesday in a speech broadcast live on state TV.

All of the steps Iran has taken to reduce its commitments to the nuclear deal are reversible and Iran will uphold all of its commitments under the deal when the remaining signatories do the same, Rouhani said. "We know their sensitivity with regard to Fordow. With regard to these centrifuges, we know. But at the same time when they uphold their commitments, we will cut off the gas again...So it is possible to reverse this step," Rouhani said. "We can't unilaterally accept that we completely fulfill our commitments and they don't follow up on their commitments."

Under the terms of the deal the Islamic Republic is allowed to spin the centrifuges at Fordow without injecting gas, Rouhani said. Iran said on Monday it had launched a new batch of advanced centrifuges to accelerate uranium enrichment, further reducing compliance with the deal following the withdrawal of its arch-foe the United States.

Iran has gradually shed commitments made under the deal with world powers since being hit with renewed U.S. sanctions last year that have crippled its oil exports.

Also Read: Pentagon chief arrives in Riyadh as Iran tensions simmer and Russia makes moves