If your answer is no, what course of action do you see as feasible to stop them ?
Re-establish the JCPOA. It was working.
The Facts:
According to the comprehensive agreement, for at least 15 years, Iran will only enrich uranium up to 3.67 percent (uranium enriched at 20% or lower is considered low enriched uranium (LEU); uranium enriched above 90% is weapons grade.)
This does not, however, mean that on day one of year 16, Iran will have enough weapons-grade uranium to build a bomb. Yes, after 15 years Iran
could begin enriching uranium beyond 3.67 percent. But without this deal, Iran
could head for a bomb
tomorrow.
Some aspects of the agreement will last 25 years, including the monitoring of Iran’s uranium mines and supply chain. Other aspects, such as the implementation of robust IAEA safeguards and access to investigate suspicious sites for illicit nuclear activity, are permanent. Regardless of what specific restrictions are lifted, Iran is still prohibited from pursuing nuclear weapons. Any activity that is clearly not intended for “peaceful use” (i.e. highly enriching uranium) will raise red flags and trigger a response from the international community.
Ultimately, the deal rolls back Iran’s nuclear program for more than a decade, pushing Iran’s “breakout time” (time it would take to enrich enough nuclear material for 1 nuclear weapon) from a few months to at least one year. It also gives IAEA inspectors greater insight for monitoring Iran’s nuclear program well into the future.
Iran Nuclear Deal: Debunking the Myths - Center for Arms Control and Non-Proliferation