President from wanted to exercise maximum pressure on iran hoping to build it to bring its oil exports to zero, but all it managed to do was to reduce it to happen million barrels a day. since the biden administration has come to power, imposing the sanctions has been more linear. gradually iran has been selling more oil to its traditional clients, particularly china. the sanctions have not been effective. thank you so much for taking us through a very complicated issue quite clearly. around the world and across the uk, ....