Iran and six world powers are approaching the final stretch in marathon talks aimed at restricting the country’s nuclear programs in exchange for sanctions relief.

The sides are aiming to have a deal by June 30. But with less than four weeks to go, some negotiators have said the talks might go beyond that date.

Any deal would cap nearly a decade of international efforts to restrict Iranian nuclear programs that could be turned toward making weapons. Tehran denies any interest in atomic arms, but wants an end to international sanctions.

The talks in Vienna on Thursday involve senior officials from Iran, the United States, Russia, China, Britain, France and Germany and follow a day of experts’ meetings.
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