http://en.farda7tcb3bmdtmsmwx7wofkxxjrcw4iiizin7zzcju2oega74cnzbid.onion/a/timeline-iran-s-nuclear-program-and-sanctions/29583330.html
In the beginning in 2003-2004 the program came under close scrutiny after the IAEA discovered that Iran had not disclosed the existence of sensitive uranium enrichment and reprocessing activities. Combined with Iran's missile program, the international community became concerned that Iran is angling towards nuclear missile capability. This led to international negotiations, sanctions and ultimately resulted in the 2015 JCPOA agreement with Iran.