Please analyze the tweet "Putin feels it acceptable to bomb &amp; kill aid workers. Soon he may be sitting at the same table as Trump!! #Armageddon #USApleasedont #horror" and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".
anger, disgust, fear, sadness