After Ukrainians filed petitions last week with President Zelenskiy to restore train service to Crimea and air service to Russia, Rosavitsia, Russia’s air navigation agency said Monday it is open to talks with Ukraine’s new government about restoring air links with Ukraine. Since flights were cut almost four years ago, Ukrzaliznytsia’s trains to Moscow have become the railroad’s most profitable routes. Ukraine’s SkyUp discount airline estimates Crimea residents account for one-third of its passengers from Kherson, the closest Ukraine-controlled airport to the peninsula. Under sanctions laws, flights from Crimea can only go to Russia.