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.

Reuters – Iran said on Tuesday bilateral nuclear talks with the United states were proceeding in a good atmosphere despite lingering gaps over key issues such as Tehran’s uranium enrichment capacity and how fast economic sanctions should be lifted.

U.S. and Iranian diplomats began a two-day meeting in Geneva on Monday to pave the way for resuming broader negotiations involving Iran and six world powers there on Wednesday.

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