Gulf equity markets closed with mixed results on Monday, with Dubai's primary share index rising 0.3% as investors digested reports of significant progress in peace negotiations between Iran and the United States.

The modest gain reflects a cautious market response to the de-escalation of tensions that have weighed on regional sentiment for months.

The diplomatic development, confirmed by Pakistan acting as an intermediary, marks a potential turning point in Middle East relations.

According to Reuters, Iranian negotiators reported substantial headway in talks with US counterparts, soothing fears of renewed conflict that had previously driven risk premiums higher across energy and equity markets.

This follows earlier mixed trading in Asia-Pacific markets, where investors had already begun pricing in the possibility of a diplomatic resolution.

The mutual understanding agreement reached between Washington and Tehran represents a significant shift from the heightened tensions that characterized the region in recent weeks.