Centrifuges in the Natanz uranium enrichment plant in central Iran last year.Credit…Atomic Energy Organization of Iran, via Associated Press Iran passed a law on Wednesday to immediately begin enriching uranium to a level closer to weapons grade and to suspend the access of international inspectors to its nuclear facilities if sanctions are not lifted by early February, shortly after President-elect Joseph R. Biden Jr. takes office. The law was the clearest fallout yet from the assassination of Iran’s top nuclear scientist , which Iranian officials have promised to avenge. The law orders Iran’s atomic energy agency to begin enriching uranium to 20 percent immediately, returning Iran’s enrichment program to the level that existed before the 2015 nuclear agreement. While converting the entire stockpile could take six months, the order to do so could be seen as a provocation in the waning days of the Trump administration. President Trump, who […]