On Sunday, the Iranian parliament speaker, Mohammad Bagher Ghalibaf, staged a closed session of the parliament to discuss the move, saying this would allow parliament’s latest views to be taken into account by the Expediency Council.
Iran’s reformists are pressing for the country to make concessions on financial transparency to allow it to reconnect to the global economic system and send a signal to the Trump White House that it is serious about renegotiating a new relationship with the west, including around its nuclear programme.
The Guardian Council has rejected two bills passed by the Iranian parliament in 2018 that would allow the country to join the two conventions.
Tehran is expected in the next week to take decisions that would mean it would be taken off the blacklist of the Paris-based Financial Action Task Force (FATF), the body that tackles money laundering and terrorist financing.
The rearguard opposition being shown by Iran’s conservatives means the supreme leader, Ali Khamenei, and the president, Masoud Pezeshkian, would have to intervene decisively with the Expediency Council to join the conventions.