Jeffrey A. Sonnenfeld

In the face of pressure from President Donald Trump, nine major pharmaceutical companies have signed a pledge to complete testing before submitting vaccines for approval. Yale's Jeffrey Sonnenfeld and Dr. Albert Ko write that the drugmakers’ caution may help provide badly needed confidence in the eventual vaccine.

Some have defended cutbacks to the United States Postal Service, weeks ahead of the election, by citing the USPS’s financial struggles. But the postal service was created to provide a public service, writes Yale SOM’s Jeffrey Sonnenfeld, not to turn a profit.

With the Democratic National Convention taking place online, Prof. Jeffrey Sonnenfeld reflects on other conventions Americans have abandoned, and the traditions we’ve let go of, during this tumultuous time.

Yale SOM’s Jeffrey Sonnenfeld reflects on the lessons he learned from the civil rights pioneer and congressman John Lewis about voice, courage, integrity—and the dangers of being too patient.

The Trump administration is reportedly planning to limit immigration for skilled workers in order to boost employment for domestic workers. Yale SOM’s Jeffrey Sonnenfeld writes that such a move would stifle innovation and even endanger Americans’ health.

In a Fortune commentary, Dr. Michael Apkon ’02, president and CEO of Tufts Medical Center, and Yale SOM’s Dr. Howard Forman and Jeffrey Sonnenfeld write that such an approach would be dangerous and ineffective.

Jack Welch, the legendary CEO of GE, died on March 1. Yale SOM leadership expert Jeffrey Sonnenfeld, who knew him for decades, writes that Welch was flawed but brilliant, an innovator and icon of industrial imagination.

Yale SOM’s Jeffrey Sonnenfeld writes that the company made the right move by turning to a knowledgeable insider instead of making a clean sweep.

Yale SOM’s Jeffrey Sonnenfeld writes that while global executives may be cheering Carlos Ghosn’s dramatic escape, they should worry about the trends behind his legal peril.

Leadership experts Jeffrey Sonnenfeld of Yale SOM and General Thomas Kolditz of Rice University write that Trump’s interference in the Gallagher case violates a key principle of military law and undermines the military command structure.