In other media appearances Abbas Araghchi confirms that multiple countries are negotiating directly with the Iranians to ensure their vessels are allowed through the blockade.
So far there are rumors that France and Italy may work directly with Iran.
The FM also notes that they are not actively blockading non-oil shipments and they already are committed to not harming ships that aren't serving the US and Israel.
BUT ships of all types and origins aren't taking the chance & want a clear plan.