UNITED NATIONS, Sept 23 (Reuters) - France, Britain and Germany said on Monday it is clear Iran was responsible for an attack on Saudi oil facilities on Sept. 14 and called on Tehran to agree to negotiations on its nuclear and missile programs and regional security issues.

“The time has come for Iran to accept a long term negotiation framework for its nuclear program, as well as regional security issues, which include its missile programs,” the three governments said in a joint statement after French President Emmanuel Macron, British Prime Minister Boris Johnson and German Chancellor Angela Merkel met during the annual United nations gathering of world leaders. (Reporting by Michelle Nichols; editing by Grant McCool)