oil spot theory
n.— «Sir Robert Thompson, who played a key role in Britain’s successful campaign against communist guerrillas in Malaya in the 1950s, developed the “oil spot” theory. A small force of speically trained troops would move into an area, secure a village and train the local people to look after their own defence.» —“Spectrum (Warfare): Bomb myth explodes” by James Adams Sunday Times (London, England) Apr. 26, 1987. (source: Double-Tongued Dictionary)