DUBAI: Iran's foreign ministry spokesman Saeed Khatibzadeh said on Monday that further talks with Saudi Arabia depend on Riyadh's "seriousness".

Saudi Arabia and Iran, launched direct talks this year at a time global powers are trying to salvage a nuclear pact with Tehran and as UN-led efforts to end the Yemen war stall.

"We invite Riyadh [to take] a diplomatic and political approach and respect the principle of non-interference in other countries, which is the only way forward for the region," Khatibzadeh said during a presser.

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The kingdom, which cut ties with Tehran in 2016, has described the talks as cordial but exploratory, while an Iranian official in October said they had gone a "good distance".