
Iran's frozen assets abroad exceed $100 billion, equivalent to four times annual hydrocarbon revenues. These funds are restricted by US-led sanctions imposed since 1979 over hostage crises and nuclear programs. Iran demands release of $6 billion as confidence measure in ceasefire talks with the US. Former Treasury Secretary Jacob Lew stated Iran could access only half even with sanctions lifted. Asset freezing occurs through court orders, sanctions, or regulatory actions by nations or banks.