
1) Irish republican army 2) Members of an IRA wing 3) Provisional ira 4) Radical European youths 5) Terrorist group 6) Terrorist organization
Found on
https://www.crosswordclues.com/clue/provos

(from the article `Irish Republican Army`) ...Although both factions were committed to a united, socialist Irish republic, the Officials preferred parliamentary tactics and eschewed violence ... Irish political activist, a cofounder of the Provisional (`Provo`) wing of the Irish Republican Army (IRA).[2 related articles]
Found on
http://www.britannica.com/eb/a-z/p/125

The Provisional Irish Republican Army (PIRA).
Found on
http://www.thecraic.net/glossary.html
No exact match found.