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: @A_RockasThe U.S. has added years to the Syrian conflict by arming the 'rebel' army. You would think that Iraq had sunk in with Kerry.
This tweet contains emotions: 
anger, disgust