Palestinians in Gaza received millions of tons of construction material and are using them to build terror tunnels instead of homes
From Foreign Policy:
...Although they are still waiting for their homes to be rebuilt and are living with just a few hours of electricity a day and barely any potable tap water, Najar and other Palestinians are not angry with Hamas for rebuilding the tunnels, which could lead Israel to wage another war to destroy them.
“What angers me is that the occupation is still imposing a siege on Gaza, which prevents the building process,” he says.
In fact, since the cease-fire between Israel and the militant Islamist group Hamas, more than 3 million tons of construction material have entered Gaza through Israel’s Kerem Shalom border crossing, according to Israeli figures. The first major tunnel attack occurred near that same crossing in 2006, when 19-year-old Israeli soldier Gilad Shalit was captured by Hamas militants. Hamas held Shalit in Gaza until 2011, when Israel exchanged him for 1,027 Palestinian prisoners. The prospect of capturing another Israeli soldier, and concluding another prisoner exchange, is one reason the tunnels are so valuable to Hamas.