U.S. Secretary of State John Kerry (in center, left side) prepares to sit down with Iranian Foreign Minister Mohammad Javad Zarif (in center, right side) in Vienna, Austria, on July 14, 2014, before they begin a bilateral meeting focused on Iran's nuclear program. Photo: State Department.

Iran and major powers met on Sunday to take stock of their differences over its nuclear program, as the Obama administration lobbied to stave off fresh sanctions against the Islamic Republic.

The Geneva negotiations, held at the level of political directors, are the culmination of five days of talks in the Swiss city and Paris, including lengthy meetings between U.S. Secretary of State John Kerry and Iranian Foreign Minister Mohammad Javad Zarif.

Read full story at Reuters.