The COVID-19 Pandemic: Shaker and Shaper of the World -- Contextualizing the Pandemic in the Migration Domain -- COVID-19: An Amplifier of Existing Inequalities -- Vaccine Diplomacy and the COVID-19 Pandemic -- The Pandemic, Disparity, and Southeast Asia -- Are we in the Endgame? Lessons Learned.

This paper addresses transboundary environmental problems in the context of an optimal tax problem, when part of the labor force is mobile across countries. The policy instruments include both commodity taxation and nonlinear income taxation. We show how the tax policy in a noncooperative...