Climatic conditions have affected armed conflict within countries, but their influence has been small compared to socioeconomic, political and cultural factors  . Inter-group inequality, and consequent relative deprivation can lead to conflict and the negative impacts of climate change lower the opportunity cost of involvement in conflict . Potential pathways linking climate and conflict include direct impacts on physiology from heat or resource scarcity; indirect impacts of climatic variability on economic output, agricultural incomes, higher food prices and increasing migration flows; and the unintended effects of climate mitigation and adaptation policies . Relative deprivation, political exclusion and ethnic fractionalisation and ethnic grievances are other key variables . Research shows that factors such as land tenure and competing land uses interacting with market-driven pressures and existing ethnic divisions produce conflict over land resources rather than a scarcity of natural resources caused by climate impacts such as drought  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report