Iranian President Masoud Pezeshkian visited Iraq on Wednesday on his first foreign trip, signalling the clerical establishment's intention to strengthen ties with a strategic ally of both Tehran and Washington as regional tensions rise.

Pezeshkian, a relative moderate who was elected in July, met Iraqi Prime Minister Mohammed Shia al-Sudani at the start of his three-day visit that Baghdad said would include the signing of a number of agreements and discussion of the Gaza war and the situation in the Middle East.

Iraq hosts several Iran-aligned parties and armed groups, as Tehran has steadily increased its sway in the major oil producer since a US-led invasion toppled its enemy Saddam Hussein in 2003.

A rare partner of both the United States and Iran, Iraq hosts 2,500 US troops and has Iran-backed armed factions linked to its security forces. It has suffered escalating tit-for-tat attacks since the Israel-Hamas war began in Gaza in October.

"We are planning to sign several agreements," Iran's state media quoted Pezeshkian as saying before his departure for Iraq. On his arrival, he was greeted by Sudani at the airport, where they reviewed a guard of honour.

The Iraqi prime minister's media office said in a statement that the two countries would sign memoranda of understanding (MoUs) in different fields including trade, agriculture and communications.

Iranian Foreign Minister Abbas Araqchi said on Wednesday that around 15 MoUs would be signed, Iranian state media reported.

"We have several cooperation areas, including political, regional ... and security issues," Araqchi said.

Pezeshkian visited a monument for Iranian Major-General Qassem Soleimani who was killed, in a US drone attack in 2020 in Iraq, Iranian state media reported.

RELATIONS WITH US

The United States and Iran came close to a full-blown conflict in 2020 after Soleimani's killing in a US drone attack at Baghdad airport and Tehran's retaliation by attacking US bases in Iraq.

The United States and Iraq have reached an understanding on plans for the withdrawal of US-led coalition forces from Iraq, say sources familiar with the matter.

Iran-aligned armed groups in Iraq have repeatedly attacked US troops in the Middle East since the Gaza war began.

State media have said Pezeshkian also plans to visit Iraqi Kurdistan, a region where Iran has carried out strikes in the past, saying it is used as a staging ground for Iranian separatist groups as well as agents of its arch-foe Israel.

Baghdad has tried to tackle Iranian concerns over regional separatist groups, moving to relocate some members in a 2023 security pact with Tehran.