Workers prepare the stage at Hofstra University during stage rehearsals for the second U.S. presidential debate on Tuesday in Hempstead, New York. (AFP)

Riot police detain a protester during a rally in support of refugees occupying the Nigerian embassy in Berlin, Germany. (Reuters)

A Palestinian woman grieves during the funerals of Ahmad Fatayer and Ezzedine Abu Nasira in Deir al-Balah in the Gaza Strip. Fatayer is one of two men killed the day before in an Israeli strike. (AFP)

People wearing white pray as they mourn the late former Cambodian King Norodom Sihanouk in front of the Royal Palace in Phnom Penh. Norodom Sihanouk, once an absolute ruler who freed Cambodia from colonialism, died Monday in a Beijing hospital at 89. (Reuters)

Syrians inspect destruction in the northern city of Aleppo. (AFP)

A woman runs in water on a flooded St Mark’s square during the first acqua alta of the season in Venice, Italy. The acqua alta, a convergence of high tides and a strong sirocco, reached 105 centimeters. (AFP)

Germany’s midfielder Marco Reus takes part in a training session of his players in Berlin on the eve of the Germany vs Sweden FIFA World Cup 2014 qualifier at Berlin’s Olympic Stadium. (AFP)

A tiger sticks out his tongue at the zoo in Frankfurt am Main, Germany. (AFP)