In an Expert’s Brief I published yesterday, I reflected on Nelson Mandela’s achievements as the father of the democratic, non-racial South Africa that replaced the odious and repressive apartheid state. A lawyer himself–one of the first Blacks called to the South African bar–Mandela was devoted to the rule of law. Once in office, his governance was characterized by racial reconciliation, which he shrewdly promoted through the use of symbols. Like President Obama, he sought “teachable moments.”

On Monday in the largest Ukraine protest since the Orange Revolution, as thousands mobilized in continuation of their demand for the resignation of their government and for sanctions against those responsible for the violence on Saturday—and as protestors in Paris, Tbilisi, Yerevan, Detroit, and cities all over Canada gathered in solidarity.

There probably isn't a more American condiment than ketchup. Millions of Americans douse their french fries, hamburgers, hot dogs and other favorite foods with it every day. The ubiquitous tomato-based sauce has been a staple in American cuisine for over a century, with surveys finding that 97% of kitchens in the United States contain a bottle. Given those facts, many Americans may be surprised to learn that ketchup's origins aren't American at all and that tomatoes were introduced to the mix relatively late in the sauce's history.

The great imperialists of the 19th Century built railroads to solidify their control of vast expanses of land and incorporate their territory into modern industrial economies. And although the construction of railroads may seem archaic today, the government of China has demonstrated their continued relevance in both internal state building and external diplomacy.

It was an extramarital affair that scandalized Kabul. It would also fuel a lifelong adventure and help create a legacy for Afghanistan. Author Nancy Hatch Dupree, eightysomething, recently opened the Afghanistan Center at Kabul University to commemorate her great love, archaeologist Louis Dupree, and return something to the country that brought them together.

Congratulations are in order for CPD as Jay Wang took the helm this fall and began engaging with the public diplomacy community as the new CPD director. As often happens with such beginnings, the focus intuitively turns to the future. I would like to suggest a counter-intuitive move and challenge public diplomacy scholars around the world to explore the contributions of ancient heritages to the practice of public diplomacy.

What's the best evidence that things are really changing in the Mideast? It is the spectacle of Israel and Saudi Arabia, hitherto America's two closest allies in the region, glowering darkly on the sidelines (and more or less in unison) as the United States and Iran begin an engagement that is already more profound than anything we've seen since the Iranian revolution of 1979. This historic shift, punctuated by the signing Saturday of a six-month, nuclear-freeze deal that both Israel and Saudi Arabia had loudly opposed, could potentially transform the entire region.

The historically undervalued art of public diplomacy as an effective instrument continues to languish on the margins of the conduct of 21st century foreign policy. But that is old news. To put it mildly, we appear to have lost the ability to employ “soft diplomacy” tools to bridge that all-important last six inches in communication among allies and foes where understanding, support, or—at least—muted opposition to a policy goal can be accomplished. Perhaps this is a harsh judgment, but allies and everyone else are increasingly comfortable “just saying no” to us today.