President Trump's memorandum was the second attempt by the United States in recent years to prevent Iran from developing a nuclear weapon.

Trump pushes for fast progress on a US-Iran MoU by mid-June, launching 60-day talks on nuclear enrichment, sanctions relief, and Strait of Hormuz access.

Trump confirms a memorandum of understanding stating Iran will not develop a nuclear weapon, with formal signing expected June 19 and sanctions relief tied

One is a nuclear deal, the other is not.