Iranian parliament speaker Ari Larijani, in an interview released on Sunday, said Tehran is ready to talk with Washington "without pre-conditions" but is waiting for a "concrete" offer from the new US administration.

"The dispute over the nuclear issue is not an unsolvable problem if we stop being entrenched in our positions," Larijani told the daily Suddeutsche Zeitung.

"We are ready to talk without pre-conditions. But for that, we need a real starting point," the former nuclear negotiator said in the interview to be published on Monday.