Four years on: Gilad Shalit still no closer to freedom

It's been four years since Israeli solder Gilat Shalit was captured by Hamas militants. Since then, he's been held in Gaza, as his captors try to convince Israel to release hundreds of Palestinian prisoners in exchange. But Shalit's family believe the Israeli government isn't doing enough to secure Gilad's freedom, and are determined to take more drastic action to move their case higher up the agenda.