In 1970, when hearing of the American invasion of Cambodia Chas bought a train ticket in Paris on the Orient Express to Istanbul, Turkey, and traveled on by bus through Iran, Afghanistan (Khyber Pass) to West Pakistan and from there, he flew to Phnom Penh, Cambodia. While in Cambodia, he continued working freelance and in addition started contributing articles (under the pseudonym of Bill Steiner) to the Copley News Service.