Trump revealed this week that he was seeking to strike a new deal with the Iranian regime, after withdrawing from an Obama-era agreement in his first term.

Iran's Supreme Leader Ayatollah Ali Khamenei said on Saturday that Tehran will not be bullied into negotiations, a day after U.S. President Donald Trump said he had sent a letter to the country's top authority to negotiate a nuclear deal.

President Trump said he sent a letter to Iran's Supreme Leader Ayatollah Ali Khamenei last week asking that the two leaders "negotiate" over the Islamic republic's nuclear program. On Saturday, the Iranian leader condemned the effort by unnamed "bullying governments" to make a deal over the program.