What is the author's style in Libra by Don DeLillo?

The language of the novel tends toward simple English, with few foreign words and phrases despite the foreign locales in some of the settings. Oswald desires to become a Russian citizen, but there are no Russian words in the text except those known universally to all English readers. Oswald is stationed in Japan for a short time in the text, but again no foreign words are used, despite this setting.