All too rarely do I hear people asking just what it is that we've done to make so many children's hearts so hard, or what collectively we might do to… - Barack Obama

So those of us who believe in democracy, we need to speak out forcefully, because both the facts and history, I believe, are on our side. That doesn’t mean democracies are without flaws. It does mean that the cure for what ails our democracies is greater engagement by our citizens -- not less.

My staff’s biggest fear was that I’d make a “gaffe,” the expression used by the press to describe any maladroit phrase by the candidate that reveals ignorance, carelessness, fuzzy thinking, insensitivity, malice, boorishness, falsehood, or hypocrisy — or is simply deemed to veer sufficiently far from conventional wisdom to make said candidate vulnerable to attack. By this definition, most humans will commit five to ten gaffes a day, each of us counting on the forbearance and goodwill of our family, co-workers, and friends to fill in the blanks, catch our drift, and generally assume the best rather than the worst in us.

The nature of our leadership will need to change with the times. As I said the first time I came to London as President, for the G20 summit, the days are gone when Roosevelt and Churchill could sit in a room and solve the world’s problems over a glass of brandy -– although I’m sure that Prime Minister Cameron would agree that some days we could both use a stiff drink.