What are the key objectives and scope of President Trump's renewed sanctions against Iran?

Trump's revived sanctions against Iran are part of his "maximum pressure campaign" designed to achieve two primary objectives: driving Tehran's oil exports down to zero and preventing Iran from obtaining nuclear weapons. The new measures specifically target firms, ships, and individuals affiliated with companies that were already sanctioned under former President Biden, expanding the scope of existing restrictions. Despite implementing these stringent economic penalties, Trump maintains that he remains open to negotiations with Iran, suggesting a dual approach of pressure and potential diplomacy in U.S.-Iran relations.