Plot: 2011/12/13 Headlines: Canada Withdraws from Kyoto Climate Change Treaty; Human Rights Advocate Moncef Marzouki Sworn in as President of Tunisia; Over 1,000 Occupy Protesters Join to Shut Down Major Western Ports; NYPD Officers Arrest Media in Effort to Break Up Occupy Solidarity Demonstration; Houston Police Arrest 20 Occupy Protesters; Police in Riot Gear Clear Occupy Baltimore Encampment; Anti-Nuclear Activists Invoke Occupy Tactics in Vermont Demonstration; 11 Arrested; Bill Allowing for Indefinite Military Detention of Americans Passes House, Senate; Obama, Maliki Agree: Troop Pullout Will Not End U. S