Nations fighting the Islamic State are discussing how to prevent the group from gaining a stranglehold in Libya, though no one is resolved yet to launch a second military intervention in the North African country this decade.

Speaking at a 23-nation conference in Rome, U.S. Secretary of State John Kerry says the last thing anyone wants "is a false caliphate with access to billions of dollars in oil revenue."

Kerry says the U.S. and its partners should increase security training and help Libya's military "not just to clear territory, but to create a safe environment for the government to stand up and operate."

Libya remains chaotic four years after ousting dictator Moammar Gadhafi. A new unity government still needs parliament's approval. Meanwhile, IS fighters are expanading operations in its center.