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If Iran decides to seriously negotiate during upcoming nuclear talks -- currently scheduled to begin this weekend in Istanbul -- what might it expect to gain from the resultant deal? Probably not much, because even a comprehensive agreement on nuclear issues would not close the profound geostrategic split between Washington

There can be little doubt that the United States, France, Britain, Germany, Russia, and China would all prefer a diplomatic outcome to the impasse over Iran's nuclear ambitions. Collectively, they make up the P5+1 mechanism that will soon resume negotiations with Iranian representatives. Talks were discontinued last year because Tehran's

There is no daylight between the United States and Israel on the objective and the preferred means for dealing with Iranian nuclear ambitions. Much has been written about possible differences, but the recent meeting between President Obama and Prime Minister Benjamin Netanyahu highlighted key points of convergence: Both agree that

Reporting from the USS Abraham Lincoln in waters near Iran, Simon Henderson describes why the carrier strike groups in the Persian Gulf are an awesome reminder of U.S. military might. View a slideshow of photos from his time aboard the supercarrier. U.S. President Barack Obama recently said that "all elements

Whether by choice or through the military's influence, Ayatollah Khamenei has decided to keep a formerly marginalized regime figure -- and, by extension, the possibility of nuclear compromise -- in play.

Notwithstanding their differing perspectives on the subject, the less daylight seen between Washington and Israel regarding Iran, the better.

By weakening the Islamic Republic's institutions and strengthening his own authority, Ayatollah Khamenei may make himself more vulnerable in a time of crisis.

As the confrontation with Iran enters a new, more dangerous phase, Washington must avoid the temptation of redefining its red lines in a manner that endangers national security.

Washington and Israel need to address their public messaging on Iran, which has undermined mutual trust and efforts to achieve their common objective: a diplomatic solution to the nuclear crisis.