Ford Motor Co. will stop selling the Explorer in dozens of overseas markets in a bid to maximize profits, a top executive said Wednesday, reversing a recent effort to grow volume by shipping vehicles to as much of the world as possible. The automaker won't send the next-generation Explorer, due in the second half of next year, to Cuba, Iceland, Thailand, Mongolia, Iraq, Egypt and other countries where it sells fewer than 100 of the large crossovers per year, Joe Hinrichs, Ford's president of global operations, said in a presentation at the Barclays Global Automotive Conference in New York.