In short those sanctions can ONLY be removed if the U.S. agrees to their removal and the Trump Administration is NOT going to do that. Simply put Iran's Defense industry today is too independent and that makes it too big of a threat to the U.S. & EU weapons sales.In the case of Iranian sanction, the situation is another. On the one hand, it’s better since acc to resolution 2231 of the UNSC in support of the JCPOA, the arms sanctions should be lifted automatically on October 18, 2020. But on the other hand, in order for the sanctions to be lifted, it's imperative that the JCPOA must survives until the fall of next year. Otherwise, even Russia and China will not be able to block the return of sanctions.
In 2015, the Americans specifically enshrined the tricky condition in the text of the agreement that if one of the sides of the agreement states that JCPOA was violated and raises this question in the UNSC, then all international sanctions will be returned automatically if the UNSCl doesn't vote against return of sanctions. And the United States for sure willn't allow this if it comes to voting in the UNSC since veto power, while the veto power of Russia and China here does not mean anything
Since the United States has withdrawn from the agreement, they themselves cannot raise this issue now, Russia and China of course will not do this, but France and the United Kingdom remain the sides and the United States is now putting pressure on them.
11. Decides, acting under Article 41 of the Charter of the United Nations, that, within 30 days of receiving a notification by a JCPOA participant State of an issue that the JCPOA participant State believes constitutes significant non-performance of commitments under the JCPOA, it shall vote on a draft resolution to continue in effect the terminations in paragraph 7 (a) of this resolution, decides further that if, within 10 days of the notification referred to above, no Member of the Security Council has submitted such a draft resolution for a vote, then the President of the Security Council shall submit such a draft resolution and put it to a vote within 30 days of the notification referred to above, and expresses its intention to take into account the views of the States involved in the issue and any opinion on the issue by the Advisory Board established in the JCPOA;
12. Decides, acting under Article 41 of the Charter of the United Nations, that, if the Security Council does not adopt a resolution under paragraph 11 to continue in effect the terminations in paragraph 7 (a), then effective midnight Greenwich Mean Time after the thirtieth day after the notification to the Security Council described in paragraph 11, all of the provisions of resolutions 1696 (2006), 1737 (2006), 1747 (2007), 1803 (2008), 1835 (2008), and 1929 (2010) that have been terminated pursuant to paragraph 7 (a) shall apply in the same manner as they applied before the adoption of this resolution, and the measures contained in paragraphs 7, 8 and 16 to 20 of this resolution shall be terminated, unless the Security Council decides otherwise;
According to some rumors, Russia and China were against this point, but Rouhani really wanted to make a deal in 2015 ..
U.S. sells it's Humvee's for $200K- +$1 Million USD per unit
It's Javelin ATGM for $180,000 USD
It's RQ-7 & Scan Eagles go for anywhere between $800K-$3.5M
MQ-1's from $4M-$20Million USD
Iran currently may not be able to produce F-22's, F-35's, Apache's and a long list of other more complex US weapons systems but there is still a rather long list of weapon systems that Iran can produce and sell at a fraction of what the American's charge. And that's just what Iran can do today and the greatest threat to them would be what would happen 10-20 years after the sanctions are removed because that opens the door for Iran to get into joint Defense projects with countries like Russia, China, Turkey, Iraq, Pakistan.... and if that happens countries like Saudi Arabia, UAE, Egypt,... who currently spend over $100 Billion a year on American Weapons will most definitely look across their boarders and weak up and prefer to invest in Asian(continent) defense industries over the overpriced weapons they are currently paying for....
Today the Saudi's are outspending Russia and every country in Europe on weapons acquisition and yet they don't have a single Aircraft carrier or a single Helo Carrier or single +1,000 ton Submarine or a single subsonic or supersonic bomber or a single stealth aircraft or a viable space program,.... to show for it.
If Iran had matched what the Saudis have spent over the past decade alone today Iran's military would have built and would have been equipped with it's own Helo Carrier's, a fleet of Missile Cruisers, at fleet of +1,500 ton diesel subs, would have started a production line of a fighter platform superior to the F-15 with over 200 fighter jets produced so far + plans for a real 5th gen fighter in the works, Iran would have built it's own supersonic bomber,.... hell with that much money Iran today would have even paid for it's own orbital space station.... And I'm not trying to say Iran is somehow special because if it was Turkey or Pakistan or Poland or North Korea or South Africa or Brazil or Sweden..... who had spent that much money on their own defense industry it would have been the same.