Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: @RussiaInsider Really sad &amp; surprising. 1 side #Russia fighting against #IS &amp; on the other supporting #Pak which is epic centre 4 #terrorism
This tweet contains emotions: 
fear, sadness, surprise