U.S. Sen. Joe Lieberman, Ind.-Conn., who was the 2000 Democratic vice presidential nominee, is among those helping Palin prepare for her debate with Democratic opponent, Sen. Joseph R. Biden Jr. of Delaware, chairman of the Senate Foreign Relations Committee, The Washington Post reported Friday.

Palin, the governor of Alaska, has little foreign policy experience but is a quick study with sound judgment, said Palin spokeswoman Maria Comella, who provided a list of 15 foreign trade representatives, including officials from China, Thailand, Norway and Seychelles, whom Palin met with as governor.

Privately, some Republican foreign policy experts said they worry about putting Palin on the ticket at a time when the United States is facing challenges ranging from wars in Iraq and Afghanistan to the atomic activities of Iran and North Korea, the Post reported.