Determine the emotional tone of the following tweet: "@RussiaInsider Really sad &amp; surprising. 1 side #Russia fighting against #IS &amp; on the other supporting #Pak which is epic centre 4 #terrorism". Use the provided emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. Respond with the emotions you identify or "neutral or no emotion".
fear, sadness, surprise