Iran has firmly rejected assertions by US Vice-President JD Vance that it agreed to allow nuclear inspectors back into the country, complicating the diplomatic backdrop to a temporary easing of American oil sanctions.

The Iranian foreign ministry stated that no new commitments were made during recent talks in Switzerland, directly contradicting the White House’s framing of the negotiations.

The denial arrives as the United States implements a two-month suspension of sanctions on Iranian crude oil production and exports.

The pause, announced on Monday, permits the Islamic Republic to resume selling and shipping petroleum on global markets.

While the sanctions relief provides a short-term supply boost, the diplomatic rift over nuclear oversight introduces significant uncertainty regarding the longevity of the arrangement.

Markets are likely to scrutinize the divergence between Washington and Tehran closely.