"Better to jaw-jaw than to war-war," Winston Churchill once quipped, showing that not even tough-minded war leaders prefer war to diplomacy in principle. But deciding when to negotiate with foreign adversaries, what to say to them, and when to resort to methods other than talk is not simple. In efforts to resolve international problems,every course of action including straightforward,non-coercive diplomacy 聴has its pros and cons.

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Gunners from the Armed Forces of Ukraine fire at Russian position with a 155 mm self-propelled howitzer 2C22 in the Kharkiv region on April 21, 2024. (Anatolii Stepanov/AFP via Getty Images)