WASHINGTON (AP) — President Barack Obama says the U.S. is ready to negotiate with longtime adversary North Korea as it has with Iran — but Pyongyang has to be serious about abandoning nuclear weapons.

Obama spoke after meeting Friday with South Korean President Park Geun-hye (goon-hay), who echoed Obama's view.

Obama says Iran has been prepared to have a "serious conversation" about the possibility of giving up the pursuit of nuclear weapons. He says there's no indication of that in North Korea's case.

Obama says that when Pyongyang (pyuhng-yahng) says it's interested in sanctions relief and improved relations, and is prepared to talk about denuclearization, "it's fair to say we'll be right there at the