BERLIN (Reuters) – Germany’s federal public prosecutor said on Tuesday it has filed charges against a German national for helping a Russian intelligence agency acquire chemicals intended for the production of weapons of mass destruction. It said the suspect, identified as Alexander S., managed a trade company in the eastern state of Saxony that since 2017 exported chemicals worth 1 million euros ($1.13 million) to a front company operated by Russian intelligence agents. The suspect, who was arrested in May last year, knew all along he had exported dual-use chemicals needed in both civilian and…