The Paris Agreement: A Global Pact for Climate Mitigation

In December 2015, representatives from nearly 200 countries gathered in Paris and did something rarely seen in international politics: they reached a near-universal consensus on how to confront a shared crisis. The result was the Paris Agreement, a legally binding treaty that has shaped global climate policy ever since. For students of international relations and environmental governance, it offers a rich case study in how sovereign states attempt cooperation when their interests, capacities, and historical responsibilities differ sharply. This post breaks down what the Agreement actually says, how it works, and why it matters for a developing nation balancing growth with sustainability.

What is the Paris Agreement? 🔗

The Paris Agreement is an international treaty adopted under the United Nations Framework Convention on Climate Change (UNFCCC) on 12 December 2015. It was opened for signature in April 2016 and entered into force on 4 November 2016, once enough countries representing a majority of global emissions had ratified it. With 195 signatories, it became the first truly universal climate pact, bringing both developed and developing nations into a single framework.

Its predecessor, the Kyoto Protocol of 1997, placed binding emission-cut obligations only on developed countries. The Paris Agreement marked a structural shift: every country now contributes, but in a way that reflects its own circumstances. This balance between universal participation and national flexibility is the feature that makes the treaty both politically durable and, to its critics, frustratingly soft on enforcement.

The core goal: limiting temperature rise 🔗

At the heart of the Agreement lies a single, measurable objective. Parties committed to holding the rise in global average temperature to well below 2 degrees Celsius above pre-industrial levels, while pursuing efforts to limit the increase to 1.5 degrees Celsius. These numbers are not arbitrary.

Why 1.5 degrees became the benchmark 🔗

For years, 2 degrees was treated as the safe ceiling for warming. But a scientific review conducted by the UNFCCC between 2013 and 2015 concluded that 2 degrees could no longer be considered safe. The push for a tougher 1.5-degree limit came largely from vulnerable nations, especially small island states facing existential threats from rising seas. The final text therefore kept the 2-degree boundary as an outer limit while elevating 1.5 degrees as the aspiration to chase.

To achieve this, the Agreement calls for global greenhouse gas emissions to peak as soon as possible and then decline rapidly, aiming for a balance between emissions and removals, often described as “net zero”, in the second half of this century. Crucially, it recognises that peaking will take longer for developing countries that are still expanding their economies.

How the agreement works: nationally determined contributions 🔗

The engine of the Paris Agreement is a mechanism called the Nationally Determined Contribution (NDC). Rather than imposing targets from above, the treaty asks each country to set its own climate pledges. Every party must prepare, communicate, and maintain successive NDCs, updating them in cycles and showing greater ambition each time.

This “bottom-up” design is a deliberate political compromise. A top-down system with imposed quotas would likely have collapsed, as countries guard their sovereignty fiercely. By letting nations define their own contributions, the Agreement secured broad participation. The trade-off is that the pledges are self-determined and not externally enforced, which is why accountability remains one of its weakest links.

The ratchet mechanism and the global stocktake 🔗

To prevent NDCs from being merely symbolic, the Agreement builds in a process designed to tighten ambition over time. A global stocktake takes place every five years, with the first conducted in 2023. It assesses collective progress toward the long-term goals and informs the next round of national pledges. The idea is that each cycle should produce stronger commitments than the last, a feature commonly called the “ratchet mechanism”.

Beyond mitigation: adaptation, finance, and technology 🔗

While cutting emissions, known as mitigation, gets the most attention, the Agreement rests on three additional pillars that are especially relevant for developing countries.

Building resilience through adaptation 🔗

The treaty recognises that some climate impacts are now unavoidable, so it sets out a global goal of strengthening the capacity of nations to adapt to climate impacts and build resilience. For a country exposed to monsoon variability, glacial melt in the Himalayas, and vulnerable coastlines, adaptation is not an abstract concern but a matter of food security, water supply, and disaster management.

Climate finance and the question of fairness 🔗

The Agreement makes financial flows a central obligation. Developed countries are required to provide financial resources to assist developing countries with both mitigation and adaptation. This builds on an earlier commitment to mobilise USD 100 billion per year, which has since been replaced by a New Collective Quantified Goal agreed at COP29 in Baku in 2024, setting a higher target of at least USD 300 billion annually by 2035.

Finance is tied to a foundational principle of climate justice: Common But Differentiated Responsibilities and Respective Capabilities (CBDR-RC). Established in the 1992 UNFCCC, this principle holds that while all nations must act, those who contributed most to the problem and have greater capacity should shoulder a larger share of the burden. In practice, developed nations have repeatedly fallen short of their finance pledges, a gap that fuels ongoing tension in negotiations.

Technology transfer and capacity building 🔗

The third pillar involves a technology framework and enhanced capacity-building. Cutting emissions in sectors like steel, cement, and transport requires advanced clean technologies that developing nations often cannot afford to develop alone. The Agreement therefore commits wealthier parties to facilitate the diffusion of cutting-edge climate technology and help build institutional and human capacity in poorer countries.

India’s role and commitments under the agreement 🔗

As the world’s third-largest emitter behind China and the United States, the country plays a pivotal role in the success of the Paris framework. Yet its per capita emissions and historical contribution remain far lower than those of industrialised nations, a fact that anchors its negotiating position.

The first NDC, submitted in 2015, set targets including a 33 to 35 percent reduction in the emissions intensity of GDP from 2005 levels and a 40 percent share of non-fossil sources in installed electric power capacity by 2030. Notably, both of these were achieved well ahead of schedule, demonstrating a credible track record on delivery.

Raising ambition: the Panchamrit and updated targets 🔗

At COP26 in Glasgow in 2021, the country announced five commitments, branded the “Panchamrit”. This led to an updated NDC in 2022 that raised the bar: a commitment to reduce the emissions intensity of GDP by 45 percent by 2030 and to reach about 50 percent of cumulative electric power capacity from non-fossil sources. Underpinning all of this is the long-term goal of reaching net zero by 2070, a timeline set two decades later than many developed nations’ 2050 targets, reflecting the need for continued development space.

Following the Agreement’s five-year cycle, the next round of targets for 2031 to 2035 was approved in March 2026, including an enhanced goal to cut emissions intensity by 47 percent and reach 60 percent non-fossil power capacity by 2035. Domestically, these commitments are operationalised through the National Action Plan on Climate Change and initiatives such as Mission LiFE, which promotes sustainable lifestyles.

Strengths and criticisms of the agreement 🔗

A decade on, assessments of the Paris Agreement are mixed. Its greatest achievement is near-universal participation; it successfully mainstreamed climate action into national laws, budgets, and development plans across the world. The flexible NDC structure kept almost every nation inside the tent.

The criticisms, however, are serious. The Agreement suffers from weak accountability because there is no penalty for missing self-set targets. Persistent gaps in climate finance undermine trust between rich and poor nations. And even if every current NDC were fully met, the combined effect would still leave the world short of the 1.5-degree goal. The treaty’s voluntary nature is simultaneously its strength and its central vulnerability. The recent withdrawal of the United States, the second-largest emitter, again in 2026, also illustrates how the Agreement remains exposed to the shifting domestic politics of major powers.

What do you think? Is the Paris Agreement’s reliance on voluntary, self-determined pledges a realistic compromise that secures global participation, or a fatal weakness that lets major emitters off the hook? And given the principle of Common But Differentiated Responsibilities, how should the burden of climate action be fairly divided between nations that industrialised early and those still working to lift millions out of poverty?

References

1. https://www.un.org/en/climatechange/paris-agreement
2. https://unfccc.int/most-requested/key-aspects-of-the-paris-agreement
3. https://climateactiontracker.org/methodology/paris-temperature-goal/
4. https://unfccc.int/resource/docs/2015/cop21/eng/l09r01.pdf
5. https://unfccc.int/topics/climate-finance/the-big-picture/climate-finance-in-the-negotiations
6. https://www.drishtiias.com/daily-updates/daily-news-analysis/10-years-of-paris-agreement
7. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2245209&reg=3&lang=1
8. https://www.pmindia.gov.in/en/news_updates/cabinet-approves-indias-updated-nationally-determined-contribution-to-be-communicated-to-the-united-nations-framework-convention-on-climate-change/
9. https://india.mongabay.com/2026/03/indias-updated-climate-plan-targets-47-emissions-cut-and-60-clean-power-capacity-by-2035/