St. Louis, US Donald Trump and Hillary Clinton speak at the second presidential debate held at the Washington University. Photo: Patrick Semansky/AP

Red Square, Moscow Military parade participants are wearing historical uniforms to celebrate the anniversary of the Soviet soldiers marching to the front lines of WWII in 1941. Photo: Maxim Shemetov/Reuters

Bonn, Germany Two red deer are fighting to impress females during rutting season. Photo: Markus Schreiber/AP

Nazare, central Portugal A surfer captured by a giant wave at Praia do Norte. Photo: Paulo Cunha/EPA

Iceland The stunning view of the 1,500-foot tall Vestrahorn Mountain surrounded by fog at sunset. Photo: Fabrizio Fortuna