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U.S.-Iran Nuclear Talks Stall as Tehran Rejects Enrichment Suspension

Tehran’s refusal of a six-month enrichment pause proposal leaves sanctions relief unresolved

U.S. President Donald Trump delivers remarks at the annual National Memorial Day Observance in the Memorial Amphitheater at Arlington National Cemetery in Arlington, Virginia, U.S., May 26, 2025. REUTERS/Ken Cedeno/File Photo
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Overview

  • Oman’s mediator presented two compromise plans—a six-month suspension of uranium enrichment and a regional oversight consortium—but Iran declined both options.
  • The United States maintains that Iran must fully halt enrichment activities to secure the lifting of its toughest economic sanctions.
  • Iranian negotiators led by Abbas Araghchi insist enrichment is a sovereign right and characterize any pause demand as unacceptable.
  • Tehran has raised uranium purity to 60 percent, a level that brings it close to weapons-grade material and intensifies global nonproliferation concerns.
  • European powers warn they will reimpose U.N. sanctions by the end of June without a deal, and President Trump has urged Israel to hold off on strikes to allow more diplomatic time.