On Sunday, Iranian lawmakers signed a petition urging their negotiating team to defend national interests in Almaty. “The West must learn that Iran’s nuclear train, which moves on the rails of peaceful goals, will never stop,” the petition read, according to the semiofficial Fars news agency.

At the same time, a former top nuclear negotiator, Ali Larijani, who is currently the speaker of the Iranian Parliament, stressed that reports by the United Nations watchdog, the International Atomic Energy Agency, had no effect on the “will and determination of the Iranian nation.”

Iranian officials do not deny that the sanctions have had an impact — Iran’s oil sales have fallen by more than half because of sanctions, and the national currency lost about half its value in 2012, amid the international isolation of its central bank. But they say they are confident that the country can withstand any hardships the West imposes.

“The U.S. government is imposing all its power to impose pressure on us; they tell other countries not to trade with us,” President Mahmoud Ahmadinejad said on Saturday. “We will pass this situation.”

Ayatollah Khamenei gave much the same message in two addresses this month. “If the Iranian people had wanted to surrender to the Americans, they would not have carried out a revolution,” he said in a meeting at his home, which was broadcast by the Iranian news media. “The people, particularly the underprivileged classes, truly feel the hardships. But they do not separate themselves from the Islamic Republic, because they know that the Islamic Republic and the dear Islam are the powerful hands which can solve the problems.”

In elevators, in private taxis and at family parties in the Iranian capital, many hope that the talks in Almaty will bring an end to the decade-long nuclear standoff. But few expect much. “Both the U.S. and our leaders will never give in,” said one judge who did not want his name mentioned because of the nature of his work. “There can only be one winner and one loser; no compromise.”