In today's interconnected world, many pressing issues transcend national borders, necessitating international cooperation for effective resolution. I strongly agree with the notion that most urgent problems can only be solved through global collaboration, as these challenges are often too complex and wide-reaching for any single country to address independently.

Firstly, environmental issues such as climate change, pollution, and biodiversity loss are quintessential examples of problems requiring international cooperation. Climate change, for instance, is a global phenomenon that affects all nations, irrespective of their contribution to greenhouse gas emissions. It necessitates a collective response through agreements like the Paris Accord, where nations commit to reducing emissions and sharing technology and resources. Without such cooperation, unilateral actions by individual countries would be insufficient to mitigate the impact of global warming.

Moreover, health crises, such as pandemics, also demand a coordinated international effort. The recent COVID-19 pandemic illustrated how viruses can rapidly spread across borders, overwhelming national healthcare systems. International collaboration in sharing research, vaccines, and medical supplies proved crucial in controlling the spread and developing effective treatments. Organizations like the World Health Organization play a pivotal role in coordinating these efforts and ensuring that even less developed countries have access to vital resources.

Furthermore, economic issues, such as financial instability and trade imbalances, also benefit from international cooperation. Economic policies in one country can have ripple effects worldwide, as evidenced by the 2008 financial crisis. International regulatory bodies and agreements, such as the International Monetary Fund and the World Trade Organization, are essential in maintaining global economic stability and addressing disparities.

However, while international cooperation is vital, it is not without challenges. Differences in political systems, economic interests, and cultural values can hinder effective collaboration. Therefore, it is imperative to foster mutual trust and understanding among nations to overcome these obstacles.

In conclusion, most urgent global problems indeed require international cooperation due to their complexity and scope. While challenges exist, the benefits of collaborative efforts far outweigh the drawbacks, making it an indispensable approach to addressing the pressing issues of our time.