Given the question: Question: "Outside of actual cash, how can corrupt politicians seek gains?"  Context: "If the highest echelons of the governments also take advantage from corruption or embezzlement from the state's treasury, it is sometimes referred with the neologism kleptocracy. Members of the government can take advantage of the natural resources (e.g., diamonds and oil in a few prominent cases) or state-owned productive industries. A number of corrupt governments have enriched themselves via foreign aid, which is often spent on showy buildings and armaments."  Answer:
The answer is:
natural resources (e.g., diamonds and oil in a few prominent cases) or state-owned productive industries