Ukrainian officials opened a criminal probe on Dec. 25 after a passenger train from Russia arrived in Crimea via a new Russian-built bridge, arguing that the train illegally carried people across the Ukrainian border.
Russia's War Against Ukraine
Associated Press: Ukraine opens probe over Russia’s railway bridge to Crimea
A vehicle runs down the 19 km road-and-rail Crimean Bridge passing over the Kerch Strait and linking southern Russia to the Crimean peninsula on May 15, 2018, in Kerch, prior to the opening ceremony.