Here are a few options for a formal title, depending on the desired emphasis:
- Option 1 (Most direct): Russia Accused of Disseminating Disinformation to Bolster German Far-Right Ahead of Elections
- Option 2 (More journalistic): Allegations Emerge of Russian Efforts to Influence German Electorate via Disinformation
- Option 3 (Concise and formal): Russia Implicated in Disinformation Campaign Targeting German Far-Right Ahead of Polls
The most standard, professional choice is Option 1.