Iran is making its red lines clear as talks on a final nuclear deal get underway.

U.S. Secretary of State John Kerry and Iranian Foreign Minister Mohammad Javad Zarif are meeting in a Vienna hotel in the first of what should be several days of negotiations ahead of a Tuesday deadline.

The U.S. and other world powers are pursuing an agreement that would curb Iran's nuclear program for a decade in exchange for billions of dollars in sanctions relief.

Zarif says an accord is in reach unless there are "excessive demands."

He says U.N. sanctions must end immediately after a deal and all other penalties must be removed. The U.S. and others say that won't happen.

On the key question of inspections, Zarif says Iran won't accept "exceptional procedures."