India on Saturday said that unilateral environmental measures such as the European Union's (EU) carbon tax do not reflect the principles of equity and hamper equitable world trade. Commerce Secretary Sunil Barthwal said that the Global South countries are facing challenges both in terms of developing climate and sustainable development strategies and responding to unilateral measures such as CBAM (carbon border adjustment mechanism). "Unilateral environment measures do not reflect the principles of equity and common but differentiated responsibilities; and hamper equitable world trade," he said in a virtual address at the third Voice of Global South Summit. India has on different platforms raised its concerns over the EU's decision to impose carbon tax on certain sectors as it would hurt the country's exports. The country is in discussions with the EU on the subject. The EU has decided to impose a CBAM, or carbon tax, which will come into effect from January 1, 2026. Initially, it