Afraid When Topics Of Global Conflicts Come Up

I get extremely anxious when anyone mentions about a global conflict on the television, radio, etc. The news goes quiet on the topic at times and then they start talking about it again. This makes me afraid to watch current affairs programmes in case they bring it up. My anxiety flares up again and I lose my enthusiasm and go quiet for a few days afterwards. To avoid feeling like this I leave the room when the topic is being discussed and if it is someone visiting me, etc, I politely change the subject. I know everyone is concerned about these things, but I feel that with me it is more than normal concern. It feels like a phobia.