French President Emmanuel Macron attends the One Planet Summit at the Seine Musicale center in Boulogne-Billancourt, near Paris, France, December 12, 2017. REUTERS/Benoit Tessier

MOSCOW (Reuters) - French President Emmanuel Macron will be a guest of honor at an economic forum to be held in Russia’s second-largest city St. Petersburg next year, Russian Foreign Minister Sergei Lavrov said on Wednesday, the RIA news agency reported.