Less than two years after the start of the COVID-19 pandemic, Russia’s illegal, unprovoked and unjustifiable war of aggression against Ukraine has triggered the biggest military confrontation in Europe since World War II. Many OECD countries have reacted to Russia’s aggression by providing...

What are the impacts on environmental effectiveness and economic efficiency of using an “instrument mix”, rather than a single instrument, to address a given environmental problem? What are the main arguments for using such instrument mixes, and are the instrument mixes currently in use...

Do voluntary approaches deliver the expected environmental benefits? Do they help reach environmental targets in a cost-effective way? This report provides an assessment of the use of voluntary approaches building on a number of new case studies. Analysis is on the environmental effectiveness,...