Why and how have the murderous barbarians responsible for so many deaths become "DAESH", and what does it mean?

If you like to understand the meaning before you use a new word, here is an excellent explanation of the meaning and significance of this word by an Arab language expert called Alice Guthrie.

https://www.freewordcentre.com/blog/2015/02/daesh-isis-media-alice-guthrie/


Thank you Alice - I will be taking every opportunity to use it.