On his first day as president, Joe Biden signed a remarkable series of executive orders. Boom! The US rejoins the Paris Climate Accord. Bang! The United States rejoins the World Health Organization. Pow! No more ban on immigration from many Muslim-majority countries. Biden's press secretary reminded reporters later in the day that all these orders merely begin complex processes that take time, but the impact is still dramatic.
If you lead a country allied with the US, or you're simply hoping for some specific commitment or clear and credible statement of purpose from the US government, you might feel a little dizzy today. The sight of an American president (Barack Obama) signing his name, of the next president (Donald Trump) erasing that name from the same legislation/bill, and then the following president (Biden) signing it back into law again will raise deep concerns over the long-term reliability of the world's still-most-powerful nation.