A senior Russian official rejected calls Friday for the establishment of a United Nations tribunal to try those responsible for shooting down a Malaysia Airlines flight in eastern Ukraine last year. “We are against it; we think it is not timely and counterproductive,” said the deputy foreign minister, Gennadiy Gatilov, according to Russian news agencies. The Netherlands, Malaysia and three other countries want a tribunal to investigate the crash in July 2014 that killed all 298 passengers and crew members. The passenger jet was flying between Amsterdam and Kuala Lumpur when it was shot down during some of the worst fighting between government forces and pro-Russian separatists in eastern Ukraine. Suspicions immediately fell on the separatists, who may have used a surface-to-air missile supplied by Russia to shoot down the plane. Moscow flatly denied that it was involved and pointed a finger instead at Ukraine’s military.