U.S. experts on Korea Peninsula affairs say former U.S. President Jimmy Carter’s visit to North Korea this week has yielded no significant results.

The experts said that Carter’s visit has only reaffirmed the fact that North Korean leader Kim Jong-il has no intentions to abandon his nuclear ambitions.

Victor Cha, the Korea chair at the Center for Strategic and International Studies, said Friday that he saw "nothing new in the messages that were sent through Carter.” He added that it was “insulting” and “disgraceful” for the North Korean leader to use an ex-president as messenger.

Cha said there is little possibility that inter-Korean summit talks will open based on the message that Carter brought. In a written message conveyed to Carter through senior North Korean officials, the reclusive leader proposed to hold a summit meeting with President Lee Myung-bak without preconditions.

Director of The Brookings Institutution Center for Northeast Asian Policy Studies Richard Bush said the visit to the North by Carter and three other members of “The Elders” group showed that the North is not interested in negotiating with South Korea or the U.S. through a reciprocal method. Bush added that nothing has changed regarding the North since the middle of 2008.

Director of the East Asia program at Stimson Center Alan Romberg said given the extremely low level of treatment that the North gave to Carter and his group, it seems Pyongyang thought the group’s visit did not have much significance.