Tony Blair said policies to tackle climate change were "doomed to fail".Tony Blair has triggered a Labour civil war by claiming the government’s policies for tackling climate change are “doomed to fail”.The prime minister said attempts to reduce society’s reliance on fossil fuels would only have a “minimal” impact on global warming.Writing in the foreword to a report by the Tony Blair Institute, he said: “Political leaders by and large know that the debate has become irrational. But they’re terrified of saying so, for fear of being accused of being ‘climate deniers’.”His remarks are a direct attack on the government’s drive to achieve net zero by 2050 – one of Labour’s flagship policies.Hitting back at t