Many people feel that most of the urgent problems can only be solved by international cooperation. To what extent do you agree or disagree?

Many of the most urgent problems facing humanity no longer fit neatly within national borders. Climate change, pandemics, refugee crises, cybercrime, terrorism, financial instability, and the loss of biodiversity all reveal the limits of purely domestic solutions. I largely agree that international cooperation is essential, although it must be supported by serious action at the national and local levels.