Not only did her negotiating approach work, Ross ended up with a decades-long partnership with the software giant.

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In fact, she has often worn her contentiousness and blunt approach, when negotiating, on her sleeve.

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So far, the Obama administration's main approach has been to seek a return to the negotiating table, and tighter sanctions on North Korea by the United Nations.

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Plenty of people wonder whether she can possibly take that approach in the eurozone, when only days ago she was negotiating on the other side.

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