The prime minister said commenting yesterday's UN SC session, on which Russia vetoed a draft resolution on setting up an international tribunal for investigation into downing of the Malaysia Airlines flight MH17 over Ukraine in July 2014, Censor.NET reports citing The Telegraph.
An alternative route to bring the guilty to justice may now be found, Cameron said.
Eleven countries on the 15-member council voted in favour of the proposal by Malaysia, Australia, the Netherlands and Ukraine, while three countries abstained: China, Angola and Venezuela.
"What are the grounds to be assured of the impartiality of such an investigation?" Russian ambassador to the UN Vitaly Churkin said in a speech to the Council after the vote.
Mr Cameron, on a visit to Vietnam, told reporters the move was "infuriating and completely wrong".
"Let us not forget: British people died on this flight. Hundreds of people died on this flight. We cannot let one country stand in the way of getting to the truth or one country stand in the way of getting justice.
"If we cannot set up a tribunal through the United Nations route, we will have to look at other ways to make sure this is done.