And what exactly does this have to do with Viking?
In answer to your question, Strategic Airlines are an Australian airline which did have a French subsidary that was closed down as a result of having its AOC revoked last year. Strategic will start a UK division in time for the summer (
see here) which Olympic would be using.
The French market is understandably up in arms and fails to understand how Luxembourg could possibly grant an AOC to Strategic, just weeks after the French CAA had revoked their French AOC
Maybe because they have evidence that the airline has no safety issues? A country is not going to award an airline an AOC just to annoy a fellow country - safety checks do have to be carried out and Luxembourg are clearly satisfied with the result!