A Civil Defence member reacts in a damaged site near the frame of a burnt vehicle after an airstrike on al-Jalaa street in the rebel held city of Idlib, Syria. REUTERS/Ammar Abdullah

Smoke rises over a damaged site as Civil Defence members try to put out a fire after an airstrike on al-Jalaa street in the rebel held city of Idlib, Syria. REUTERS/Ammar Abdullah

A tattered Greek flag flutters in the village of Meyisti on the Island of Kastellorizo which is the most easterly of the islands in Greece, July 4, 2015. REUTERS/Cathal McNaughton

A nurse prepares a bag of saline at Intermountain Healthcare's Utah Valley Regional Medical Center in Provo, Utah April 1, 2014. REUTERS/George Frey

A woman shops for groceries at a Whole Foods supermarket in New York May 18, 2010. REUTERS/Shannon Stapleton

The Pfizer logo is seen at their world headquarters in New York April 28, 2014. REUTERS/Andrew Kelly/File photo

Red Bull's Max Verstappen of the Netherlands is seen in the paddock ahead of the Singapore F1 Grand Prix Night Race in Singapore, September 15, 2016. REUTERS/Jeremy Lee

Red Bull's Daniel Ricciardo of Australia gives an interview ahead of the Singapore F1 Grand Prix Night Race in Singapore, September 15, 2016. REUTERS/Jeremy Lee