When Barack Obama was elected to the US Presidency in 2008, millions of Americans celebrated, and there were millions of others - mainly in the countries comprising what used to be called in Cold War times the "free world" - who cheered as well.
Americans - or most of them - were thrilled at what promised to be the threshold of a new era of inter-racial harmony. But those millions in other lands - in a dimension to American politics that may not always be understood in the US itself - were delighted that the leadership of "their" world had passed to someone who would fill the role with distinction.
And so it has proved. The inter-racial harmony within the US itself may still be a work in progress but President Obama has proved himself a worthy champion of the democratic ideal. At home, he has worked hard to ensure that the glories of the American dream have been more fairly shared, that an effective response to the Global Financial Crisis has meant that those able to work have jobs to go to, and that families struck down by ill-health are not left by the wayside.
The international dimension has been more challenging. He has shown himself to be a staunch ally and strong upholder of democratic values, and has provided effective leadership on critical issues such as climate change. But issues such as the Syrian conflict have proved very difficult to resolve and his judgment has on occasion been called into question.