Mahatma Gandhi, Non-violence and Terrorism of World

Today's world is really fear with the danger of violence and searching the method to avoid it, but the danger is growing with a very fast speed. When i am thought about the Terrorism and violence then my mind is always thought about the thoughts of the father of the nation Mahatma Gandhi.  

Mahatma Gandhi suggest a very simple way to face the violence that is Truth and Non-violence. But in today's worlds these weapons are failed against Terrorism because they didn't like to face this and anyone didn't use this weapon.

If we want to face a danger of like ISIS by any other weapon then my last suggestion is the Unity. If all the nations came at a table and thought about it and use there total force to stop it, then there is a little possibility to stop it.