Israeli forces struck two United Nations schools in the Gaza Strip on Tuesday, killing at least 34 people, as international call for an immediate cease-fire grew.
Readers write about extracting oil from shale and tar sands, the challenges Obama will face in Afghanistan, and how Hamas impedes the possibility of peace with Israel.
Absent more forceful US role, others make frantic bid to halt fighting.
Team Obama is more pragmatic and less ideological than its predecessors, say diplomats and campaign advisers. Afghanistan will be a foreign-policy priority.
New York Times correspondent Patrick Tyler analyzes 50 years of US policy in the Mideast.