In arguably his most important foreign trip, Elbridge Colby, US undersecretary for defence policy, visited key Southeast Asian capitals this month. In a speech in Manila, the Pentagon policy chief extolled America’s “flexible realism”, which he said serves “the practical, concrete interests of regular Americans” and echoes Southeast Asian nations’ commitment to “pragmatism, an openness to dialogue, respect for counterparts, proud nationalism, and a focus on economic prosperity”. Amid the United...