Overview: 2011/01/11 Headlines: Obama Heads to Tucson for Shooting Memorial; Giffords' Brother-in-Law Sends Message of Peace from Space; Lawmakers to Introduce Gun Control Legislation; Colorado Man Arrested for Threatening Sen. Bennet; Tom DeLay Sentenced to Three Years in Jail; Gates: North Korea is Becoming a "Direct Threat" to U.S.; Biden: U.S. Troops May Stay in Afghanistan After 2014; Ex-Mossad Head Criticized for Admitting Iran Does Not Pose Imminent Nuclear Threat; Israel Demolishes Palestinian Hotel to Build More Settlements; Death Toll in Tunisia Rises to 35; Schools Indefinitely Shut Down; 10 Dead, 78 Missing After Massive Floods in Australia; Lori Berenson Returns to Court in Peru; British Police Officer Exposed for Infiltrating Green Groups; Duke-Progress Merger Creates Nation's Largest Utility Company; WikiLeaks' Julian Assange Appears in London Court; Anti-Torture Activists Mark 9th Anniversary of Opening of Guantánamo