For more than 50 years, Yarmouk refugee camp was used as a showpiece of Syrian support for the Palestinian cause.

Now, after three years of war and siege, jihadists of the Islamic State (Isis) stalk its ruins, the regime bombs the buildings that still stand and the few remaining residents must choose between abject misery if they stay and likely death if they flee.

More than anywhere else in Syria, the fight for Yarmouk – especially since Isis stormed the camp on 9 April – has captured the shifting allegiances and, at times, cynical complexities that now define the myriad battlefields across the ruined country. […]