While movement of people was a feature of the Middle East and North Africa (as it is worldwide) before the revolutions of the Arab Spring, there are now 11.7 million internally displaced people in Iraq, Libya, Syria and Yemen, and more than 2.7 million refugees across the region.

People are fleeing war and humanitarian disaster, economic problems and political persecution. Many have fled their homelands entirely, and many more have had to leave their homes and move to different parts of their home countries.

Brother and sister Abubakr and Ella Al-Shamahi speak to displaced people, all with different reasons for leaving their homes, and with different experiences in the years since 2011 - from a man living in a camp for internally displaced people in the last rebel held area of Syria, to their cousin, a political refugee living in exile in the UK.