Two former hostages Siamak Namazi and Nizar Zakka finally met for the first time outside the walls of Iran's notorious Evin prison to celebrate Siamak's long awaited return home.

What if you were taken hostage? The United Nation is struggling to forge solid consensus on the Gaza hostage crisis. But the UN indeed has definitive guidance on file for its staff possibly subjected to hostage-taking in the field. Based on decades of UN experiences, some of the following might help keep you alive if you were taken hostage.