Release of 400 million barrels of Iranian oil if Tehran-Washington agreement is reached

According to Energy Press and quoted by Oil Price, currently about 400 million barrels of Iranian oil are stuck in tankers under sanctions and cannot be supplied to the world market.
According to this specialized energy media, if a major agreement is reached between Tehran and Washington, this significant volume of oil could quickly enter the world market; an event that, according to analysts, will put severe downward pressure on prices and increase the likelihood of a collapse in oil prices.
Oil Price has emphasized that the fate of these stranded cargoes is tied to the outcome of possible negotiations between the two countries and any diplomatic progress could suddenly change the equations of the energy market.