France says Iran is in process of accelerating the efforts to increase its capacity of uranium enrichment at underground Fordow nuclear plant.
French foreign minister Le Drian in an interview said Iran earlier this month started pressing ahead with plans to enrich uranium to 20% fissile strength that is the level it achieved before striking the deal with world powers to contain its disputed nuclear ambitions
He asked the United States and Iran to return to a 2015 nuclear agreement.