He's a formidable adversary, and negotiating with him is not a lot of fun.

CNN: Captured U.S. soldiers face military court in Yugoslavia

He could by turns be incredibly generous, funny, playful and kind, while at the same time Mr Winner made a formidable adversary.

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Meanwhile, the senior U.S. envoy who had spearheaded efforts to get Milosevic to sign onto a Kosovo peace deal said Thursday the Yugoslav president was "a formidable adversary" who chose bombings over diplomacy.

CNN: Captured U.S. soldiers face military court in Yugoslavia

He represents a formidable adversary for Ellison.

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