The existential threat of Climate change is another example of an issue that is beginning to become securitized, for example by the trend to declare a climate change emergency. Though as of 2020, in the opinion of Anatol Lieven, the threat of global warming has not been securitized anywhere near as much as it needs to in order to trigger the substantial changes in government policy needed to give the world a chance to hit the IPCC 1.5 °C target. Lieven argues that securitisation would be especially helpful with climate change as it would enable more military experts to speak out on the subject, with military officers being the one type of expert that conservatives tend to widely respect.