1. When we look at the lessons learned from the ongoing COVID-19 pandemic, we can understand that the need for collective action among members of the international community to effectively address global challenges is minimal. 2. One of the lessons learned from the ongoing COVID-19 pandemic is the need for collective action among members of the international community to effectively address global challenges such as pandemics and climate change. 3. If we learn anything from the ongoing COVID-19 pandemic, each country which is a member of an international community, individually, need to take actions and address global challenges like pandemics and climate change. 4. Out of the many things that COVID-19 pandemic has taught us, the one that stands out is addressing global challenges like pandemics and climate change effectively by members of the international community. 5. There are many lessons that can be learned from the ongoing COVID-19 pandemic, including climate change and global challenges and these has to be collectively addressed among international community members.