When the lethal fragments of shells began to explode all around him, a terrified Yousef Abu Radi wrapped his arms around his ten-year-old sister Jinan to try and protect her.
“We were only about 50m from the Lebanese army checkpoint when the bus came under fire,” said the 12-year-old as he lay in Safad hospital in Bedawi, a refugee camp 10km from Nahr al-Bared, from where around 20,000 Palestinians have fled a brutal week of fighting between the Lebanese army and Islamist militants.