The main concern for the world in 2010, as highlighted in a report by the World Economic Forum, is the potential for government finances to deteriorate and lead to full-blown debt crises. Major economies have responded to the financial crisis by increasing deficits through stimulus packages and backing private debt, which has raised worries among financial markets. Developed nations are particularly at risk, as many emerging economies have already taken steps to address their fiscal issues. The unprecedented levels of debt being accumulated by governments in an effort to combat recession are increasing the possibility of sovereign defaults, according to the report. He warned that increased unemployment could result from higher levels of unemployment, leading to social and political risks. The report identified unsustainable debt levels, the financial crisis, underinvestment in infrastructure, and rising health costs due to chronic diseases as top risks. Other threats included potential asset price collapse, risks related to Afghanistan, and a possible slowdown in Chinese growth impacting employment, social unrest, and exports. The report also highlighted the danger of developed nations accumulating unsustainable levels of debt, which could lead to full-blown debt crises with significant social and political consequences, including higher unemployment. Hofmann stated that government debt levels exceeding 100 percent of GDP, as seen in the United States and the UK, are clearly unsustainable. Investors face a risk of being scared and questioning the sustainability of high debt levels, which could lead to sovereign debt crises and defaults. Dubai and Greece serve as early warnings that should be taken seriously, as worries over these countries have affected global markets. The United States and United Kingdom also face tough decisions on when to withdraw fiscal stimulus to ensure recovery without causing fear of sovereign debt deterioration. The report also pointed out a "governance gap" between short-term pressures and the need for long-term decisions on issues like health, pension reform, and climate change. The report emphasized that not enough was being done to tackle the problem of underinvestment in infrastructure, warning that this could have negative impacts on food and energy security. According to the World Bank, global infrastructure investment needs over the next 20 years are estimated at $35 trillion. Additionally, the report highlighted the growing financial burden of chronic diseases due to increased life expectancy and unhealthy lifestyles, urging both developing and developed nations to address this issue through prevention campaigns promoting healthier habits. The report also pointed out that the greatest risks facing the world today may come from slow failures or gradual risks, as their long-term impacts are often underestimated.