MARITIME & MILITARY

The arrival in  Yemen  of 450 Latin American troops — among them are also Panamanian, Salvadoran and Chilean soldiers — adds to the chaotic stew of government armies, armed tribes, terrorist networks and Yemeni militias currently at war in the country. Earlier this year, a coalition of countries led by Saudi Arabia, including the United States, began a military campaign in Yemen against Houthi rebels who have pushed the Yemeni government out of the capital, Sana. Mercenaries are an attractive option for rich countries who wish to wage war yet whose citizens may not want to fight,” said Sean McFate, a senior fellow at the Atlantic Council and author of “The Modern Mercenary.” “The private military industry is global now,” said Mr. McFate, adding that the United States essentially “legitimized” the industry with its heavy reliance on contractors in Iraq and Afghanistan over more than a decade of war. “Latin American mercenaries are a sign of what’s to come,” he...