Can the US Block the Progress of Irans Domestic Defense Industry

On June 20, 2019, Iran s Islamic Revolutionary Guard Corps (IRGC) shot down a United States RQ4A Global Hawk BAMSD surveillance drone that had violated Iran s airspace, with the homegrown Iranian 3rd of Khordad missile system over the Strait of Hormuz. Trump s administration is trying hard to extend the UN arms embargo on Iran, which will expire in October 2020 as part of Iran s nuclear deal agreements. The arms embargo on Iran might, or might not, get extended. But, in any case, can the US and its allies block the progress and advancement of Iran s domestic defense industry