US Senator Joe Lieberman announces retirement decision

US Senator Joe Lieberman has decided to retire in 2012.
Democratic officials, who requested anonymity because they were not authorized to speak publicly, said Tuesday that the independent from Connecticut would not seek a fifth term in 2012.
The 68-year-old Lieberman won his fourth term in 2006 as an independent after losing the Democratic primary to businessman Ned Lamont, but he continues to side mostly with Senate Democrats.