Abdul Hamid S, who was working as a linguistic and cultural adviser with the German army, "is believed to have passed insights to an Iranian intelligence agency," prosecutors say.
In the 60s, Russia took advantage of leftist anti-imperialist movements in an attempt to destabilise the liberal world order. Today, the Russians are trying to repeat the feat with the far-right, only this time, Islamophobia is the rallying cry.
US President Donald Trump is staying at his resort in Turnberry in western Scotland amid anti-Trump protests and allegations over Russian meddling into the 2016 election.
Exit polls say that Vladimir Putin has won the presidential election with more than 70 percent of the vote after around 30 percent of the votes counted.
Sergei Skripal, once a colonel in Russia's GRU military intelligence service, was convicted in Russia of treason in 2006 but exchanged as part of a Cold War-style spy swap in 2010.
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