GAZA CITY, Gaza Strip (AP) — The children of the Attar clan have lived through three wars in just over five years, each time fleeing their homes as Israel bombarded their neighborhood in the Palestinian Gaza Strip.

Their psychological scars show. Some act out, others cling to their mothers or withdraw, like 12-year-old Ahmed who sat by himself Monday on a bench in the courtyard of a U.N. school where his family once again sought shelter.