International Atomic Energy Agency (IAEA) Director General Rafael Grossi said Monday that an abandoned multinational nuclear deal with Iran needs urgent restoration, as Tehran continues to enrich uranium to a dangerously high level. “It is clear that we don’t have many months ahead of us. We have weeks,” Grossi said in an interview with Reuters, a week after the IAEA announced in a statement that Iran has resumed a program to enrich uranium up to 20 percent at one of its underground nuclear facility. Uranium enriched to up to 20 percent can be used to fuel nuclear reactors, and makes Iran a step closer to obtaining the 90 percent needed for a nuclear weapon. Tehran has also vowed to expel IAEA inspectors from the country unless the U.S.-led international sanction against the regime is lifted before Feb. 21, citing a law passed in November that obliges the government to halt …