Jeffrey A. Sonnenfeld

Peltz, the founding partner of Trian Fund Management, is demanding a seat on Disney’s board. Yale SOM’s Jeffrey Sonnenfeld and Steven Tian found that more than half of the companies with Peltz on their boards have underperformed the market.

Yale SOM’s Jeffrey Sonnenfeld and Steven Tian write that the Biden administration’s balanced approach has helped Europe maintain its natural gas supply while protecting U.S. interests.

Yale SOM’s Jeffrey Sonnenfeld and Stevan Tian name five corporate leaders whose accomplishments stood out this year—and five who led their enterprises into rough waters.

Yale SOM leadership expert Jeffrey Sonnenfeld provides an insider’s perspective on the move.

Polls predicted a “red wave,” but Democrats held the Senate and fought to a near-draw in the House. Yale SOM’s Jeffrey Sonnenfeld and Steven Tian write that after a series of polling misses, it’s time to acknowledge the fundamental flaws in pollsters’ approach.

Yale SOM’s Jeffrey Sonnenfeld remembers Ashton Carter, the scholar and diplomat who served as secretary of defense in the Obama administration.

Yale SOM’s Jeffrey Sonnenfeld and Steven Tian write that energy industry analysts are getting it wrong about the Biden administration’s progress on energy independence and supply.

With its surprise cut in oil production, write Yale SOM’s Jeffrey Sonnenfeld and Steven Tian and Congressman Ro Khanna LAW ’01, Saudi Arabia has chosen to side with the Russian war machine.

Yale SOM leadership expert Jeffrey Sonnenfeld remembers George Weyerhaeuser, who led his family’s timber business for decades. He died earlier this year at 95.