Determine the emotional tone of the following tweet: "Biggest #THREAT 2 #GLOBAL #STABILITY? #climatechange #food #water #security #terrorism #russia #war #trump #clinton #geopolitics #korea $vwo". 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".
anger, disgust, fear, pessimism