Russian Foreign Minister Sergei Lavrov underscored that the Vienna talks on Iran's nuclear program made considerable progress, although any final deal was not cut by Tehran and the six major world powers.
Reuters reported minutes ago that Iran and the six world powers broke the negotiations on Monday and are to meet again next month after missing a deadline to clinch a final deal to resolve their 12-year standoff over Tehran's nuclear program.
Media reports said earlier citing sources the talks may be extended until the end of March and even until July 2015.
But other sources said the talks have been extended until July 10, and the world powers have taken up to release $700 million of Iran's frozen assets on a monthly basis.