Iran stands to gain access to billions of dollars in oil revenues after the United States granted a 60-day sanctions reprieve as part of a newly signed US-Iran memorandum of understanding (MoU). But actually unlocking decades of frozen assets and fully dismantling the sanctions regime could prove far more difficult than simply announcing sanctions relief.

US-Iran MOU lifts oil export sanctions, ends naval blockade, and opens a 60-day window for a comprehensive deal including a $300B reconstruction fund.

By Andrea Shalal and Timothy GardnerWASHINGTON, June 23 (Reuters) - Tehran stands to gain billions of dollars from a 60-day reprieve from U.S. sanctions announced on Monday, but…