The United States should realize that Iran will not respond to pressure, President-elect Masoud Pezeshkian said in a statement published Saturday, in which he also highlighted his country's friendship with China and Russia.

Pezeshkian, a relative moderate who beat a hardline rival in elections, also reiterated that Iran does not seek nuclear weapons, adding that Tehran would expand ties with neighbors and engage with Europe.

"The United States ... needs to recognize the reality and understand, once and for all, that Iran does not — and will not — respond to pressure (and) that Iran’s defense doctrine does not include nuclear weapons," Pezeshkian said in the statement, titled "My message to the new world" and published in the daily Tehran Times.

Pezeshkian, a 69-year-old heart surgeon, has pledged to promote a pragmatic foreign policy, ease tensions over now-stalled negotiations with major powers to revive a 2015 nuclear pact and improve prospects for social liberalization and political pluralism.

However, many Iranians are skeptical about his ability to fulfill his campaign promises as Supreme Leader Ayatollah Ali Khamenei, not the president, is the ultimate authority in the Islamic Republic.

"China and Russia have consistently stood by us during challenging times. We deeply value this friendship,” Pezeshkian said.

"Russia is a valued strategic ally and neighbor to Iran and my administration will remain committed to expanding and enhancing our cooperation," he said, adding that Tehran would actively support initiatives aimed at ending the conflict in Ukraine.

"The Iranian people have entrusted me with a strong mandate to vigorously pursue constructive engagement on the international stage while insisting on our rights, our dignity and our deserved role in the region and the world.

"I extend an open invitation to those willing to join us in this historic endeavor," Pezeshkian said.