Russian cosmonaut Mikhail Kornienko of Roscosmos, left, and NASA astronaut Scott Kelly, right, are seen next to a photo of them aboard the International Space Station, at an event celebrating the strength and stability of the space station’s international partnership, Thursday, March 24, 2016, at the Spaso house in Moscow, Russia. Mariella Tefft, wife of U.S. Ambassador John Tefft, hosted the event that was attended by Head of Roscosmos, Igor Komarov, NASA Administrator Charles Bolden, and other leadership.