Mitt Romney and Rick Santorum both claim victory in Iowa with the latter being defeated by only eight votes, the arsonist who terrorized Los Angeles is apprehended and the Occupy Movement rings in the New Year in Zuccotti Park. This and more in this week's Week in Pictures.
In this Dec. 22, 2011 file photo, Wisconsin Gov. Scott Walker is seen in Maple Bluff, Wis. Walker, who failed to reveal that the federal government had ordered him to immediately lift an enrollment cap on a state program to help the disabled and elderly stay out of nursing homes, announced at a news conference Wednesday, Dec. 28, 2011, he would lift the two-year enrollment cap on the Family Care program and expand it to the 15 counties that don't currently offer it. (AP Photo/Scott Bauer, File)
Members of the Iran Navy participate in a drill Wednesday, Dec. 28, 2011 in the Sea of Oman. Iran's navy chief warned Wednesday that his country can easily close the strategic Strait of Hormuz at the mouth of the Persian Gulf, the passageway through which a sixth of the world's oil flows. The navy is in the midst of a 10-day drill in international waters near the strategic oil route. (AP Photo/International Iran Photo Agency, Ali Mohammadi)
Occupy Wall Street protesters celebrate in Zuccotti Park in New York Saturday Dec. 31, 2011 standing on barricades they removed from around the park. The demonstrators had been ecited from the Park in November. (AP Photo/Stephanie Keith)
A man walks outside a shuttered Pharmacy in central Athens, on Monday, Jan. 2, 2012. Greece is already seeing its first strike of the year, with pharmacists and doctors walking off the job to protest government plans to trim their profits by cutting the retail prices of drugs. They are also demanding payment of hundreds of thousands of euros owed by social insurance funds. (AP Photo/Petros Giannakouris)
Los Angeles Police Department Chief Charles Beck flanked by Los Angeles Mayor Antonio Villaraigosa, right, answers questions during a news conference of the joint task force announcing the apprehension of a prime suspect Harry Burkhart in a series of 53 blazes in the Los Angeles Area, Monday, Jan. 2, 2012. (AP Photo/Gus Ruelas)
Traders work at the Euronext center on the floor of the New York Stock Exchange during the first day of trading for the new year, Tuesday, Jan. 3, 2012. The Dow Jones industrial average soared 200 points in the first minutes of trading, as solid economic news, notably out of China, is helping mute concerns over the European debt crisis. (AP Photo/Bebeto Matthews)
In a Dec. 31, 2011 file photo Republican presidential candidate, former Pennsylvania Sen. Rick Santorum, left, speaks during a campaign appearance in Knoxville, Iowa. In a Jan. 2, 2012 file photo Republican presidential candidate former Massachusetts Gov. Mitt Romney speaks during a campaign stop in Clive, Iowa. Santorum and Romney took near opposite paths to twin victories in Iowa's presidential caucuses. (AP Photo/Chis Carlson(left) and Charlie Riedel/FILE)