Fleeing Yemen

Children ride on the back of a pick-up truck with their luggage as they flee Saudi-led air strikes in Sanaa April 6, 2015. REUTERS/Khaled Abdullah

Passengers board the Yemeni-owned Sea Princess II oil tanker, chartered to carry people of various nationalities fleeing Aden, as Houthi fighters advanced on the city April 1, 2015. REUTERS/Sami Aboudi

A boy looks as he stands by a departure gate at Sanaa International Airport where foreigners are being evacuated from Yemen April 6, 2015. REUTERS/Khaled Abdullah

People wait for a flight outside Sanaa International Airport April 6, 2015. REUTERS/Khaled Abdullah

Boys wait for a flight at Sanaa International Airport April 6, 2015. REUTERS/Khaled Abdullah

People flee Sanaa with their belongings, fearing renewed air strikes in Sanaa, April 2, 2015. REUTERS/Mohamed al-Sayaghi

An Indian evacuee from Yemen hugs his grandson after arriving at the international airport in Mumbai, India April 6, 2015. REUTERS/Danish Siddiqui

Passengers board the Yemeni-owned Sea Princess II oil tanker, chartered to carry people of various nationalities fleeing Aden, as Houthi fighters advanced on the city April 1, 2015. REUTERS/Sami Aboudi

A family flees with their belongings, fearing renewed air strikes in Sanaa, April 2, 2015. REUTERS/Mohamed al-Sayaghi

A woman gestures as she queues by a departure gate at Sanaa International Airport April 6, 2015. REUTERS/Khaled Abdullah

Boys wave from a vehicle as they flee Sanaa with their family and belongings April 2, 2015. REUTERS/Mohamed al-Sayaghi

People wait to check in for their flights at Sanaa Airport, March 28, 2015. REUTERS/Khaled Abdullah

An Indian evacuee family from Yemen walks towards a taxi after arriving at the international airport in Mumbai, India April 6, 2015. REUTERS/Danish Siddiqui

People flee Sanaa with their belongings fearing renewed air strikes, March 28, 2015. REUTERS/Mohamed al-Sayaghi

A man flees with his family and their belongings on a motorcycle in Sanaa, March 28, 2015. REUTERS/Mohamed al-Sayaghi

A woman carries her child as she waits for their flight to leave Yemen via Sanaa Airport, March 28, 2015. REUTERS/Khaled Abdullah

A girl waits with her family for their flight at the Sanaa Airport, March 28, 2015. REUTERS/Khaled Abdullah

People flee Sanaa with their belongings fearing renewed air strikes, March 28, 2015. REUTERS/Mohamed al-Sayaghi

People flee Sanaa with their belongings fearing renewed air strikes, March 28, 2015. REUTERS/Mohamed al-Sayaghi

People wait to check in for their flights at Sanaa Airport, March 28, 2015. REUTERS/Khaled Abdullah