As a consequence of armed conflicts happening in different parts of the world, inhabitants in those regions had been forced to flee and seek refuge in other countries.
As of 2011, the largest number of refugees was coming from Afghanistan (2.6 million people), followed by Iraq (1.4 million), and Somalia (1 million), as seen in the map above in color red. Countries where these refugees were seeking asylum included Pakistan, Iran, Syria, Kenya, Germany, and Jordan.
Up to the point when this data was collected, there was not an armed conflict going on in Syria. In fact, Syria was listed as an asylum destination for refugees coming from Iraq. That has changed now, and Syria has joined other countries torn by conflict whose inhabitants are seeking asylum in other parts of the world.
Source: Global Refugee Tracker: where are refugees from? And where do they go (2011)