Congress is considering imposing tougher sanctions on Iran after the latest round of diplomatic talks over Iran’s nuclear program ended in Moscow without substantive progress, The Financial Times reported Thursday, June 21. Congress was already preparing another piece of sanctions legislation before the latest diplomatic setback in Moscow and members of both parties are pushing for stricter measures to be included in the new bill, which would further reduce Iran’s ability to export oil. A number of leading members of Congress are also calling on the Obama administration to declare publicly that the effort to negotiate a settlement with Iran over its nuclear program has failed. On Friday, 44 Republican and Democratic senators sent a letter to President Obama urging him to abandon the negotiations if the Moscow meeting failed to produce any concessions from Iran.