These photos, from the U.N. High Commission for Refugees, or UNHCR, series called "The Most Important Thing: Syrian Refugees," ask the viewer, "What would you bring with you if you had to flee your home and escape to another country?"
UNHCR said in a statement that when Syria refugees attempt to flee, they must disguise their intent "by appearing as though they are out for a family stroll or a Sunday drive as they make their way toward a border." Often, they carry little more than what they can fit in their pockets.
At the end of November 2012, UNHCR estimated that of the almost 30,000 people who had registered as refugees, 14,900 of them were in "critical medical condition." And 38.8 percent had special needs.
Jordan is currently housing the highest number of refugees: more than 275,000. Lebanon is hosting 213,000, Turkey has almost 186,000, Iraq has 107,000, and Egypt has 20,000. These numbers only reflected the number of registered refugees plus those waiting to be registered. The actual numbers are higher.
Unicef, the U.N.'s children's fund, has requested $68.4 million for its Syrian efforts in 2013.
Estiamtes say more than 70,000 people have been killed by the two-year-old civil war.
Actress and U.N. Goodwill Ambassador Angelina Jolie has twice visited the Zaatari refugee camp in Jordan, which grows by between 2,000 and 3,000 more people every night.
The past winter was a huge challenge for UNHCR, which struggled to distribute enough blankets, heaters, warm clothing and tents. Many people had to sleep in the mud and rain.
Many of the refugees who arrive in the camps are under 18. Many are unaccompanied.
The U.N. World Food Programme said they are daily struggling to feed the 2.5 million people displaced within Syria.