Russia win synchronised swimming duet gold

Russia's Natalia Ishchenko and Svetlana Romashina have retained their synchronised swimming duet gold

Natalia Ishchenko and Svetlana Romashina retained their synchronised swimming duet gold -- keeping Russia's stranglehold on Olympic gold in a sport in which they have won every title since the Sydney 2000 Games. China's Huang Xuechen and Sun Wenyan won silver and Japan's Yukiko Inui and Risako Mitsui earned bronze.