Key Terms & Concepts — UPSC Mains
CBDR-RC
"A foundational UNFCCC principle requiring developed nations to take the lead in climate action given their historical emissions and greater financial capacity"
Common but Differentiated Responsibilities and Respective Capabilities (CBDR-RC) is a principle enshrined in the United Nations Framework Convention on Climate Change (UNFCCC, 1992) and reaffirmed in the Paris Agreement (2015). It acknowledges that while all nations share a common responsibility to address climate change, developed countries — which have contributed the majority of cumulative greenhouse gas emissions since industrialisation — bear a greater obligation to reduce emissions and provide financial and technological support to developing nations. The principle is codified in Article 3.1 of the UNFCCC and underpins India's consistent position that per-capita emissions (India: ~2.4 tonnes CO2/person vs US: ~14 tonnes) and historical responsibility must be factored into climate commitments.
CBDR-RC is a cornerstone of India's climate diplomacy and appears regularly in UPSC Mains GS-2 (IR) and GS-3 (Environment). It is the basis for India's argument at COP negotiations that developed nations must honour Article 9 (climate finance) commitments before demanding steeper cuts from developing countries.
- 1 Enshrined in Article 3.1 of the UNFCCC (1992, Rio Earth Summit)
- 2 Reaffirmed in Article 2.2 of the Paris Agreement (2015)
- 3 Recognises historical responsibility of developed nations for cumulative emissions
- 4 India's per-capita emissions (~2.4 tonnes) are well below global average (~6.3 tonnes)
- 5 Basis for India demanding climate finance commitments from developed nations
- 6 NCQG agreed at COP29 Baku commits $300 billion/year by 2035 from developed nations
- 7 India's NDC 3.0 targets are framed as intensity-based (not absolute) under CBDR-RC logic
India's NDC 3.0 uses emissions intensity targets (47% cut from 2005 levels by 2035) rather than absolute emission caps, consistent with the CBDR-RC principle that developing nations should not be held to the same standards as historically high emitters.