More than 4 million people had left their homes in Syria because of the crisis, said UN Secretary General Ban Ki-moon, RIA Novosti.
According to the report, 60 million people are refugees around the world.
UN Secretary General noted that the current immigration crisis in the world is the biggest one since the Second World War, and that it is a serious challenge for the world community.
Ban Ki-moon reported that 25% of the current population of Lebanon is constituted by Syrian refugees. More than 2 million refugees dwelled in Turkey, 1.5 million - in Jordan, 300 thousand - in Iraq, and some in North Africa and Egypt.
Ban Ki-moon said that about 8 million people urgently need humanitarian aid in Syria.