Indonesian guerrillas crept through the dense jungles of Dutch New Guinea last week, forcing the Dutch to spread out their meager defenses (5,800 combat troops).

Indonesian guerrillas crept through the dense jungles of Dutch New Guinea last week, and it became clear that Indonesia’s President Sukarno was at last going to do more than talk about grabbing the disputed territory that he calls West Irian. He also adroitly deployed psychological warfare: Indonesia broadcast reports of …