But you cannot ignore the circumstances in which the conduct occurs or abandon the core principle that impeachment should be reserved for those cases in which the president's very capacity to govern is called into question.

CNN: Transcript: White House Counsel Ruff's opening statement

The core purpose of the Geneva Convention is to encourage the conduct of war in a way that minimizes violence to civilians.

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To complement these ground-based measurements, which can focus on only a limited area, the team will conduct aerial surveys once a year at each core site, looking at things like leaf chemistry and the health of forest canopies, and will also look down on them with satellites.

ECONOMIST: A 30-year plan to study America��s ecology is about to begin

Olmert and Abbas said they would tell negotiating teams to "conduct direct and ongoing negotiations on all final status" and core issues, the prime minister's office said.

CNN: Israel, Palestinian leaders to talk borders, security, settlements