How to lead when nobody knows what’s coming

“If you can keep your head when all about you are losing theirs and blaming it on you, yours is the world, and everything that’s in it.”

—Rudyard Kipling

Right now, CEOs are confronting a grim reality. The global trade system that has underpinned business planning is unravelling. Ships pile up in harbor, supply chains that have taken years to build are being undermined, and the diplomatic relations that hold world trade together are fraying.

The most destabilizing...