Few may realize the important role that think tanks play as places where world leaders come to share ideas, discuss world problems, and seek solutions to the issues their countries face. For example, The Heritage Foundation not only works with our own government here in the U.S., but with leaders and thinkers from around the world. Recent visitors to Heritage include El Salvadoran President Nayib Bukele, Estonian President Kersti Kaljulaid, U.N. Secretary General Antonio Guterres, NATO Secretary General Jens Stoltenberg, EU Ambassador Stavros Lambrinidis, and ministers and ambassadors from nations large and small. New U.K. Prime Minister Boris Johnson is...