The Turkish and Iranian presidents held talks, Thursday evening, on the telephone, which dealt with strengthening bilateral relations, recent developments in the region, and upcoming political changes in the United States of America.

Iranian President Hassan Rouhani assured his Turkish counterpart, Recep Tayyip Erdogan, that Iran would retaliate in due time against the murderers of the nuclear scientist Fakhrizadeh, who was assassinated last Friday near the capital, Tehran.

Iran accuses Israel and the states of involvement in the assassination of Zadeh, who is described as the father of the Iranian nuclear program.

"We know who assassinated Fakhrizadeh through the method used in the assassination," Rouhani said during the call.

He stressed that the assassination of Zadeh was "a major crime and an inhuman act, and Tehran will respond to it at the appropriate time."

On the Iranian nuclear program, Rouhani said, "If the Biden administration abides by the nuclear agreement, Iran is ready to fulfill its obligations."

It is noteworthy that Rouhani is working to prepare the Iranian political atmosphere for an understanding with the new US administration, which will assume its duties on January 20 next.

For his part, the Turkish President condemned the assassination of Fakhrizadeh, and said that Ankara considers it a heinous terrorist act aimed at peace and stability in the region.

Erdogan said, "All plans aimed at destabilizing the region will fail again."

And through his hope that the arrival of Joe Biden to the White House will change the US policy towards cooperation and dealing instead of the method of threats and sanctions.

Regarding the situation in the Karabakh region, the Turkish president said that "peace and stability in Karabakh will bring benefits to the countries of the region, including Armenia."

Erdogan stressed the importance of avoiding any action that would threaten the territorial integrity and sovereignty of Azerbaijan.

In this regard, Rouhani stressed the need to confront the influence of terrorists in the region, following the Karabakh crisis.

The Anadolu Agency reported that the two presidents discussed ways to strengthen relations between the two countries and regional developments.

These talks come amid a political movement in the region before the new US administration takes over its duties.

Earlier, Iranian President Hassan Rouhani called on the conservative movement in his country to be slow and not rush to take any decisions regarding the nuclear program.

On Thursday, Iranian Foreign Minister Mohammad Javad Zarif urged the United States to show goodwill to return to the 2015 nuclear deal from which US President Donald Trump withdrew in 2018.

He added that if the United States respected its original commitments, Tehran would return to full compliance with the agreement.