Iran's foreign minister insisted on his country's right to enrich uranium, striking a defiant note as a US naval strike force sailed in regional waters amid weeks of unprecedented domestic turmoil inside Iran. Abbas Araqchi's comments followed talks between US and Iranian officials in Oman over the fate of Iran's nuclear programs. Tehran says its programs are peaceful in nature, aimed at generating electricity; Washington and other countries suspect Tehran is striving to build an atomic weapon. "Zero enrichment can never be accepted by us," Araqchi…