West asks whether Iran is serious or stalling as talks set to resume
Iran and world powers will meet in Vienna on Monday to try to salvage their 2015 nuclear deal, but with Tehran sticking to its tough stance and Western powers increasingly frustrated, hopes of a breakthrough appear slim.
Diplomats say time is running low to resurrect the pact, which then-U.S. President Donald Trump abandoned in 2018, angering Iran and dismaying the other powers involved - Britain, China, France, Germany and Russia.
Six rounds of indirect talks were held between April and June. The new round begins after a hiatus triggered by the election of hardline cleric Ebrahim Raisi in June as Iran's president.
Tehran's new negotiating team has set out demands that U.S. and European diplomats consider unrealistic, Western diplomats say.