Addressing environmental concerns in world politics is fraught with complex problems and challenges, primarily because these issues are often transboundary, long-term, and deeply intertwined with economic development, national sovereignty, and global power dynamics. The collective action required often clashes with individual state interests.

Main Problems and Challenges:

1. Sovereignty vs. Global Commons: States traditionally prioritize national sovereignty and domestic interests over collective global environmental good. This makes it difficult to enforce international environmental laws or compel states to adopt policies that might be perceived as detrimental to their immediate economic growth, even if beneficial for the planet.
2. North-South Divide and Historical Responsibility: There's a fundamental disagreement between developed (North) and developing (South) nations. Developing countries argue that industrialized nations are historically responsible for the bulk of environmental degradation and should bear a greater burden in mitigation efforts, including providing financial and technological assistance. This concept of 'common but differentiated responsibilities' often leads to stalemates in negotiations.
3. Economic Costs and Development Priorities: Transitioning to green economies, adopting sustainable practices, and mitigating pollution require substantial financial investment and can impact economic growth in the short term. Developing nations, focused on poverty alleviation and industrialization, often view stringent environmental regulations as impediments to their development.
4. Lack of Political Will and Short-Termism: Political leaders often operate on short electoral cycles, making them reluctant to implement long-term environmental policies that may have immediate economic costs but delayed benefits. Powerful industrial lobbies can also influence policy against environmental protection.
5. Enforcement and Compliance: International environmental agreements often lack robust enforcement mechanisms. Compliance is largely voluntary, and there are limited penalties for non-compliance, making it difficult to ensure that states adhere to their commitments.
6. Scientific Uncertainty and Denial: While scientific consensus on issues like climate change is strong, deliberate misinformation campaigns and the politicization of science can create doubt, hindering policy action. The long-term and complex nature of environmental problems can also make their immediate impacts less tangible to some.
7. Fragmented Global Governance: Environmental governance is spread across numerous international organizations, treaties, and conventions (e.g., UNFCCC, UNEP, CBD). This fragmentation can lead to overlapping mandates, lack of coordination, and an absence of a single, authoritative global body to effectively address interconnected environmental crises.
8. Resource Scarcity and Conflict: Environmental degradation, such as water scarcity, desertification, and climate-induced migration, can exacerbate existing geopolitical tensions and lead to new conflicts, particularly in already unstable regions.
9. Technological Gaps and Transfer: Developing countries often lack access to the advanced green technologies needed for sustainable development. The transfer of such technologies from developed to developing nations is often slow, expensive, or restricted by intellectual property rights.
10. The 'Free Rider' Problem: Some states may be tempted to benefit from the environmental efforts of others without contributing their fair share, undermining collective action and trust.

Addressing these challenges requires a paradigm shift towards greater international cooperation, equitable burden-sharing, robust financial mechanisms, and a recognition that environmental security is integral to national and global security.