These changes may not fundamentally alter the UK's energy balance - but they "send the wrong signal", explains Robert Falkner, professor of International Relations at the London School of Economics.But Prof Falkner considers the return to investing in fossil fuels a "temporary setback" and suggests the EU could take this opportunity to make itself energy secure by investing in renewables.In a dramatic election last week, President Jair Bolsonaro was ousted by Luiz Inácio Lula da Silva - potentially changing overnight the future of the Amazon.Since Glasgow, Brazil's targets have been criticised as "less ambitious" than pledges made in 2016, and for failing to meet promises.Historically, Brazil has used hydropower to provide large amounts of green energy - but a drought in 2021 drained its dams."