France's top diplomat is expressing doubt at claims by Yemen's rebel Houthis that they are responsible for recent drone attacks on Saudi Arabian oil facilities.

Foreign Minister Jean-Yves Le Drian said Thursday on CNews television that the claims are ``not very credible.'' He would not speculate on who was responsible, but reiterated that France sent its own experts to Saudi Arabia to investigate what happened.

The U.S. and Saudi Arabia suspect Iran was behind Saturday's attack on the world's largest oil processing facility and a major oil field.

Le Drian urged Iran to respect its 2015 nuclear deal with world powers and ``come back to the table'' to restore calm in the increasingly tense Persian Gulf region.

He said France is talking to ``everyone in the region'' as it pushes for a diplomatic solution instead of a new military conflict.