An Israeli soldier walks next to Merkava tanks stationed in a deployment training area in the Israeli-annexed Golan Heights near the border with Syria on August 28, 2013. Israel will strike back 'fiercely' if Syria attacks the Jewish state, Prime Minister Benjamin Netanyahu said, as the US mulled military action against President Bashar al-Assad's regime. AFP PHOTO/MENAHEM KAHANA
Elementary school children take cover under their desks during an earthquake drill at a school in Tokyo on September 2, 2013. Nationwide anti-disaster drills were held on September 1 on the anniversary of the massive 1923 earthquake which killed more than 140,000 people in the Tokyo area. AFP PHOTO/Yoshikazu TSUNO
Two teams of rowers in action during the Gondolini race, the most important competition of the Historic Regata 2013 on September 1, 2013 in Venice, Italy. The Historic Regata is the most popular boat race on the Gran Canal for locals and tourists alike.
Members of Mexican police stand amidst a molotov cocktail burning during a protest against President Enrique Pena Nieto's reform agenda, on September 1, 2013, in Mexico City. AFP PHOTO/RONALDO SCHEMIDT
This screenshot made available by public broadcaster ARD shows German Chancellor Angela Merkel (L) and her challenger Peer Steinbrueck of the SPD during a television debate in Berlin on Septeember 1, 2013 ahead of the General election taking place on September 22. AFP PHOTO / POOL / WDR / RTL / MAX KOHR
A man competes during the 10000 Volt obstacle as he competes during the Tough Viking race on September 1, 2013 in Stockholm. The course of the Tough Viking race consists of 12 kilometers filled with 15 brutal obstacles (barbed wire, mud, ice, water, tunnels, electricity, fire, climbing, etc.) designed by specialists in the Swedish Armed Forces. AFP PHOTO/JONATHAN NACKSTRAND
Boats, including the 'Qingdao' yacht (L), depart from St Katharine Docks for the start of the 'Clipper 2013-14 Round the World Yacht Race' on September 1, 2013 in London, England. The race is set to be the largest in the event's history with 12 yachts manned by 670 crew from over 40 different nations. The 40,000 mile, 8 leg course is set to visit six continents and take approximately eleven months to complete.
Russian President Vladimir Putin (R) touches a walrus on September 1, 2013 during his visit at an oceanarium on Russky (Russian) island near the city of Vladivostok. Putin is on a three-day visit to the Russian Far East. AFP PHOTO/RIA-NOVOSTI/POOL/ALEXEI NIKOLSKY