A man shelters from the rain as he photographs London's iconic Tower Bridge, illuminated in blue, white and red lights, resembling the colours of the French national flag Nov 14, 2015. (Justin Tallis/AFP/Getty Images)
The landmark CN Tower in Toronto is lit blue, white and red in the colors of the French flag following the Paris attacks Nov 13, 2015. (Chris Helgren/Reuters)
People light candles and lay flowers at a makeshift memorial outside the French embassy in Rome. (Vincenzo Pinto/AFP/Getty Images)
The archeological museum in Skopje, Macedonia is illuminated with the colours of the French national flag Nov 14, 2015. (Robert Atanasovki/AFP/Getty Images)
People light candles during a gathering to honor the victims of the Paris attacks in Tel Aviv's Rabin Square Nov 14, 2015. (Jack Guez/AFP/Getty Images)
The sails of the Sydney Opera House are illuminated in the colours of the French flag on Nov 14, 2015 in Sydney, Australia. (Daniel Munoz/Getty Images)
A man lights a candle in memory of the victims of the Paris attacks Nov 14, 2015 in Lyon, France. (Jeff Pachoud/AFP/Getty Images)
Turkish mourners light candles outside the French consulate in Istanbul Nov 14, 2015. (Yasin Akgul/AFP/Getty Images)
The Brandenburg Gate stands illuminated in the colors of the French flag as people arrive to lay candles and flowers at the nearby French Embassy in Berlin Nov 14, 2015. (Sean Gallup/Getty Images)
Bono and band members from U2 place flowers on the pavement near the scene of yesterday's Bataclan Theatre terrorist attack on Nov 14, 2015 in Paris. (Jeff J. Mitchell/Getty Images)
Children hold candles as they pray during a vigil for the victims of the attacks in Paris, at a dance school in Agartala, India Nov 14, 2015. (Jayanta Dey/Reuters)
San Francisco City Hall is lit up with blue, white and red, the colors of the French flag, following the Paris terror attacks Nov 13, 2015. (Stephen Lam/Reuters)
Shanghai's landmark building Oriental Pearl TV Tower is lit up in blue, white and red, the colors of the French flag Nov 14, 2015. (Aly Song/Reuters)
Candles are lit as people gather in Hong Kong Nov 14, 2015 to mourn for the victims killed in Friday's attacks in Paris. (Kin Cheung/The Associated Press)