Iranian President Mahmoud Ahmadinejad called on regional powers Sunday to unite against "aggression".

Iranian President Mahmoud Ahmadinejad called on regional powers Sunday to unite against "aggression" as he gathered with his counterparts from Afghanistan and Pakistan for security talks.

Addressing the third International Nowruz Celebrations underway in Dushanbe, Tajikistan, marking the Iranian New Year Ahmadinejad said the Nowruz fest is an opportunity for taking steps towards regional tranquility.

“Nowruz invites the world people to friendship and justice and encourages them to stand against injustice,” noted the Iranian President during the ceremony hosted by Tajik President Emomali Rahmon and attended by some 15,000 spectators.

"Nowruz represents a battle between the forces of light against those of darkness, the fight against injustice," AFP quoted Ahmadinejad as saying.

"Nowruz is traditionally viewed as a new day without poverty, aggression, instability, crime, discrimination, occupation and the abasement of human dignity," the Iranian president added.

"All people have the right to live their life in dignity," he declared.

According to AFP, Ahmadinejad and Rahmon were due to meet Pakistani President Asif Ali Zardari and Afghan leader Hamid Karzai later Sunday for another round of talks aimed at forging a joint position in the restive region.

The meeting is officially set to focus on providing support for the Afghan economy as the NATO presence there winds down by the end of 2014.

But Ahmadinejad has used the occasion to ratchet up rhetoric in the face of renewed international pressure over his country's contested nuclear drive, AFP reported.

"Only the friends and neighbors of Afghanistan can in practice and realistically help this nation," Ahmadinejad said in a statement released by his office on Saturday.

"The occupiers who came to this nation from kilometers away are not here to aid the government and the people of Afghanistan but are here to loot the resources and mines of Afghanistan," he said.

Both Zardari and Karzai gave more measured restrained speeches which made no reference to the presence of foreign troops in Afghanistan or the United States.

Ahmadinejad's visit came as a top US official prepared to sit down with Afghan Deputy Foreign Minister Jawed Ludin and Pakistan's Foreign Secretary Jalil Abbas Jilani to discuss Karzai's February visit to Islamabad.

Celebrations on Nowruz is held annually as the International Nowruz Day has been proclaimed by the UN General Assembly on March 21.

The first and second international celebrations on Nowruz were held in Tehran in the past two years.

Photos taken from IRNA.