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We examine the impact of technological change on the stability of climate coalitions and explore how international cooperation on abatement affects the incentives of signatories to invest in R&D to reduce emissions. We compare the case of no technological change with exogenous technological change and induced technological change. In the latter case R&D investments are endogenous. We find that the highest equilibrium pay-offs are achieved in the case of induced technological change. Furthermore, the formation of a climate coalition boosts R&D investments in carbon abatement technologies in signatory countries.