The Saudi foreign minister said on Sunday that leaders of the six-nation Gulf Cooperation Council may not attend an Arab summit in Iraq this month unless "adequate" conditions are met.

"We will not boycott" the March 29 summit in Baghdad, Prince Saud al-Faisal told a news conference after GCC foreign ministers met in the Saudi capital.

"The Gulf Cooperation Council is determined to attend but the level of participation will depend on the availability of adequate conditions," he said.

He explained that "the problem of the Baghdad summit is not one of security," but was due to "some parties close to the Iraqi government who are interfering in the affairs of Kuwait and Bahrain."

"There are key issues such as Iranian interference in the internal affairs of Gulf countries," he said.

In December the GCC accused Iran of meddling in the internal affairs of the Sunni-ruled regional states.

"Stop these policies and practices... and stop interfering in the internal affairs" of the Gulf nations, GCC states said in a statement in December at the end of their annual summit.

GCC foreign ministers met in Riyadh to discuss their economies and the conflict in Syria ahead of an expected meeting with their Russian counterparts.