1986 U.S. launches airstrikes against Libya that killed 100 and imposes sanctions after fatal terrorist bombing, linked to Libya, at a West Berlin club frequented by American military personnel.
1988 270 people, including 169 from the United States, are killed when a bomb explodes on Pan Am Flight 103 as it flies over Lockerbie, Scotland, sparking worldwide outcry against Libyan leader Moammar Gadhafi.
1999 Libya hands them over for trial. The UN suspends sanctions.
2001 Scottish court in Netherlands finds one guilty. Judicial panel recommends minimum of 20 years "in view of the horrendous nature of this crime" but acquits the other, who is freed.
2002 Libya offers to settle claims by victims' families, described as effort to lift U.S. and UN sanctions.
2003 Libya officially takes responsibility for Lockerbie bombing and pledges $2.7 billion compensation to victims' families. The Security Council later votes to formally lift sanctions. Libya renounces weapons of mass destruction.
2004 U.S. lifts some sanctions.
2006 U.S.-Libya diplomatic relations restored.
2008 Secretary of State Condoleezza Rice visits Libyan capital and has meeting with Gadhafi, saying the U.S. "doesn't have permanent enemies." Libya's $1.5-billion payment Oct. 31 clears last hurdle in restoration of diplomatic relations with Washington. The money will go into a $1.8-billion fund for victims of Flight 103 and the German disco bombing and a $300-million fund for Libyan victims of retaliatory U.S. airstrikes.
2009 Scottish authorities free the Lockerbie bomber, citing his failing health from prostate cancer.
2011 On Feb. 26, the Security Council imposes sanctions on Gadhafi's regime after two days of discussion, and as rebel forces gained ground against the Libyan military.
March 10-11 France, followed by the European Union, recognizes the opposition Interim Governing Council as the "legitimate representatives of the Libyan people."
SOURCES: U.S. STATE DEPARTMENT, NEWS REPORTS.