Sell-tic if your referring to the football team.
The pronunciation of the ancient Greek word does not determine how the modern English word is pronounced. The word was copied in English from either the Latin "celticus" or the French "celtique" which in its turn came from the Latin. The Latin word is believed to have been copied from the Greek.
Both the Greek and the Latin words were pronounced with the "k" sound, the French with the "s" sound. The regular English pronunciation of "ce-" words derived from French or Latin is with the "s" sound. This word, at least outside Scotland, was predominantly pronounced with the "s" sound as recently as the 1960s but there has been a movement towards the "k" sound except for the Scottish soccer team which is always pronounced with the "s".
The Concise Oxford Dictionary has changed its first preference from the "s" sound to the "k" sound in recent editions. If you want to know what the dominant pronunciation is where you are, the best you can do is listen to what people say. The "correct" pronunciation is the one that is used.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.