Definition of "multilateralist" [multilateralist]

• Supporting or advocating multilateralism. (adjective)
• This sense?) One who favors involving multiple parties when approaching foreign relations (noun)

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• "It's not that the secretaries of State and Defense are always like-minded: Rumsfeld is widely and not inaccurately seen as a hawkish "go it alone" interventionist, while Powell tends to take a more cautious and "multilateralist" approach."
• "He remained an internationalist (what we would call a "multilateralist" today) throughout his career and even in retirement."
• "Remember how, while constantly singing the praises of U.S. president-elect Barack Obama for his "multilateralist" and sophisticated view of the world, our pundits killed off entire forests blasting Prime Minister Stephen Harper for his lack of "nuance" in supporting Israel when it was under attack from Hezbollah rockets in 2006?"