Ukrainian President Petro Poroshenko vowed Wednesday to push for justice despite Russia's veto of a UN resolution that would have set up a tribunal to try those responsible for shooting down passenger flight MH17 over the former Soviet state.

"The results of the vote on the MH17 tribunal speak for themselves. But Ukraine will not stop there. Our goal is to punish the guilty," presidential spokesman Svyatoslav Tsegolko quoted the Ukrainian leader as saying minutes after the vote in New York.