U.S. Secretary of State John Kerry will travel to Vienna this weekend to join ongoing world power nuclear talks with Iran.
The State Department said on July 10 that Kerry "will see if progress can be made on the issues where significant gaps remain and assess Iran's willingness to make a set of critical choices at the negotiating table."
British Foreign Secretary William Hague and German Foreign Minister Frank-Walter Steinmeier will also attend.
But Russian Foreign Minister Sergei Lavrov will not, according to Moscow's permanent representative to international organizations in Vienna, Vladimir Voronkov.
Deep divisions persist at the Vienna talks.
Washington wants deep cuts in Iran’s uranium enrichment capabilities, but Iranian negotiators want Tehran to be allowed to expand enrichment activities.
A target date of July 20 has been set to resolve those differences.
Based on reporting by Reuters, AP, and AFP