BERLIN—World powers were set to resume high-level talks in Vienna on Tuesday focused on bringing the United States back into the nuclear deal with Iran, in their first session since comments surfaced from the Iranian foreign minister alleging that Russia once tried to scupper the pact.
The Russian Foreign Ministry has thus far refused to comment on the remarks from Foreign Minister Mohammad Javad Zarif, made in a seven-hour interview with a think tank associated with the Iranian presidency that leaked over the weekend.
