Greek PM declares national mourning as flash floods death toll rises to 15

Overturned cars are seen at a flood-ravaged area in Mandra, west of Athens, Greece, on Nov. 15, 2017. The strong torrential downpour in the municipalities of Mandra, Nea Peramos and Megara, west of the Greek capital, has claimed 15 lives, according to the latest official count by the Health Ministry. (Xinhua/Lefteris Partsalis)