NEW : Tomahawk cruise missiles strike more than 20 targets . The senior military official said earlier that phase two of the mission would include planes flying over Libyan airspace near Tripoli , and in the Mediterranean Sea near Benghazi . Comment: : They were fired from U.S. and British ships and submarines . NEW : Obama expects the U.S. portion of the military action to last just a few days , an official says .
NEW : Tomahawk cruise missiles strike more than 20 targets . Comment: : They were fired from U.S. and British ships and submarines . NEW : Obama expects the U.S. portion of the military action to last just a few days , an official says .