WASHINGTON — US officials are discussing possible ways for Iran to dispose of its highly enriched uranium without directly handing it off to Washington , The Post has learned.  An initial memorandum of understanding , which could be finalized by the end of this week, would reopen the Strait of Hormuz and confirm an agreement in principle by Tehran to cease future nuclear enrichment. A tense second round of talks would then focus on dismantling Iran’s nuclear program. One option floated inside