US President Barack Obama will meet his Iraqi counterpart at the United Nations next week, US officials said Friday, amid mounting preparations to seize control of Mosul from the Islamic State group.

Top Obama aide Ben Rhodes said Obama would meet Iraqi Prime Minister Haider al-Abadi on the margins of the UN General Assembly on Monday.

"The two leaders will have a chance to check in on the counter-ISIL campaign," said Rhodes, using another acronym for the Islamic State group. "Also the campaign to liberate Mosul."

The United States deployed an additional 400 troops to Iraq earlier this month as local forces prepare for an assault on Iraq's second city.

Allied forces have been carrying out "shaping operations" around the northern city, working on an airfield near the town of Qayyarah that will provide a staging area and striking suspected IS chemical weapons facilities nearby.

Jihadists seized the city in 2014 and it is now their last major stronghold in Iraq.

The meeting between Obama and Abadi is also likely to offer support for the Iraqi leader, who faces growing internal challenges.

Cleric Moqtada al-Sadr has been flexing his considerable political muscle, mustering thousands-strong demonstrations to demand government reforms.

During the UN meeting Obama is also expected to hold bilateral meetings with Nigerian President Muhammadu Buhari and Colombian President Juan Manuel Santos.

Rhodes said there were no plans to hold a rescheduled meeting with the Philippines's leader Rodrigo Duterte.

Obama cancelled a planned meeting with him in Laos earlier this month after the firebrand leader's barbed remarks insulting the US president.

Source: AFP