Hasan Rowhani used his first news conference since Friday's election to sketch out views that are likely to be further welcomed in the West as possible opportunities to ease tensions, led by those stemming from Tehran's disputed nuclear program.
But he said he would not support halting Iran's uranium enrichment, which is a key stumbling block on talks between Iran and world powers.
But Iran's president does not have authority to set major policies such as the direction of the nuclear programme or relations with the West. All such decisions rest with the ruling clerics and the powerful Revolutionary Guard, which have so far appeared to embrace Rowhani.
Rowhani, however, can use the strength of his landslide victory and his influential connections, including former President Akbar Hashemi Rafsanjani, to try to sway policies.
Rowhani described his election as opening a "new era" and said he would "follow the path of moderation and justice, not extremism."
"We have to enhance mutual trust between Iran and other countries," he said. "We have to build trust."
He also said dealing with the economy was among his priorities, in a clear reference to how Western sanctions over Iran's nuclear efforts have helped spike inflation to more than 30 per cent and slashed vital revenue.
