Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @JohnKerry can be as indignant as he wants but the world knows Obama will do nothing and Putin will just do what he wants #Aleppo #Syria
This tweet contains emotions: 
anger, disgust, pessimism