Retired U.S. Gen. Colin Powell says Libyan leader Moammar Gadhafi must step down after launching military attacks against his opponents.
Powell was senior military assistant to Secretary of Defense Caspar Weinberger during U.S. airstrikes on Libya in 1986.
Powell later served in many roles that involved assessing Gadhafi's regime, including as chairman of the Joint Chiefs of Staff and Secretary of State.
Powell says Gadhafi cannot remain in power by "murdering his own people" and that it's time for him to step aside. He spoke Tuesday at a regional security conference in Abu Dhabi.
He says the new governments on either side of Libya _ Tunisia and Egypt _ could serve as models for the region.