This is a very odd post, at a number of levels. First, individual governments can’t change the climate. Secondly, there aren’t different ways to change the climate, that they can choose between. Thirdly, the climate can’t tyrannise or control the population.
Climate change is the net result of human activity all over the world, as a result of emission of various greenhouse gases that absorb radiation in the infra red and thereby delay the escape into space of heat from the ground, when it is warmed by the sun. Climate change is thus a result of how we all live, principally the traditional sources of energy used in a lot of our technology.
The effects are various: heatwaves and droughts, wildfires, fiercer hurricanes, changes in rainfall pattern that damage harvests, and sea level rise that threatens to inundate low-lying areas (Bangladesh, Netherlands, even New Orleans.) Such changes are already costing trillions in insurance payouts in rich countries, and can be expected to lead to large scale population migrations from poor ones, due to famine and flooding.
It strains credulity to imagine such effects would be deliberately exacerbated by any government, or what could possibly be gained.