Facebook CEO Mark Zuckerberg has met with the Russian Prime Minister Dmitry Medvedev.
Zuckerberg shook hands with Medvedev at the Gorki residence near Moscow, and also met Deputy Prime Ministers Arkady Dvorkovich and Vladislav Surkov.
But before that he apparently headed straight to Red Square, where he took a photo wearing his now-traditional hoody, according to the AFP.
He also ate lunch at McDonalds, the reports said, before heading off on official business (though he had donned a suit and tie by the time he shook hands with Medvedev).
The social network entrepreneur was in Russia to promote the network, which is far from the market leader in the country.
Facebook is a distant second place to VKontakte, a social network founded by the Russian Pavel Durov.
But it has also been suggested he is in the country to try and recruit some of its top talent away from VKontakte, and bring them back to California.
The meeting with Medvedev is hardly Zuckerberg's first contact with world leaders - the billionaire has met US President Barack Obama and UK Prime Minister David Cameron among dozens of other top political figures.