Image source, EPA-EFE/REX/Shutterstock Image caption,

Families of Israeli hostages held in Gaza joined a massive rally in Tel Aviv marking a hundred days of their captivity

By Wyre Davies

BBC Middle East correspondent

One hundred days ago, the previously unthinkable happened in Israel. A state, born out of adversity and war only 75 years ago, woke up to what some have since described as a threat to its very existence.