A two-tier climate club exploits the comparative advantage of large countries to mete out punishments through trade, while taking their capacity to resist punishment as a constraint. Countries outside the coalition price carbon at a fixed fraction of the average carbon price adopted within the...

As part of its ambitious European Green Deal package, at the heart of which stands the commitment to become carbon-neutral by 2050, the European Commission announced that it would propose a "carbon border adjustment mechanism" to address the risk of carbon leakage. This study models the measure...