Iran's leader accuses world powers of trickery over nuclear deal

Iran's Supreme Leader Ayatollah Ali Khamenei pictured in June 2009

Story highlights

  • Report: Iran's leader accuses world powers of "deception, trickery and backstabbing" in nuclear talks
  • Ayatollah Khamenei also criticizes a letter sent by U.S. Republican senators to Iran

(CNN)Iran's Supreme Leader Ayatollah Khamenei on Thursday accused the six world powers involved in negotiations over Iran's nuclear program of "deception, trickery and backstabbing" in their dealings with Tehran, according to Iranian state media.