The deal four years ago set a 3.67 percent limit for uranium enrichment, but Tehran announced it would no longer respect it after the United States unilaterally abandoned the agreement last year and reimposed crippling sanctions.
The deal four years ago set a 3.67 percent limit for uranium enrichment, but Tehran announced it would no longer respect it after the United States unilaterally abandoned the agreement last year and reimposed crippling sanctions.