“Every war results from the struggle for markets and spheres of influence, and every war is sold to the public by professional liars and totally sincere religious maniacs, as a Holy Crusade to save God and Goodness from Satan and Evil.”

Island (1962)
Context: One Folk, One Realm, One Leader. Union with the unity of an insect swarm. Knowledgeless understanding of nonsense and diabolism. And then the newsreel camera had cut back to the serried ranks, the swastikas, the brass bands, the yelling hypnotist on the rostrum. And here once again, in the glare of his inner light, was the brown insectlike column, marching endlessly to the tunes of this rococo horror-music. Onward Nazi soldiers, onward Christian soldiers, onward Marxists and Muslims, onward every chosen People, every Crusader and Holy War-maker. Onward into misery, into all wickedness, into death!

"Moral crusade"
The Doubter's Companion (1994)

The War On Drugs Is Lost (1995)
Context: More people die every year as a result of the war against drugs than die from what we call, generically, overdosing. These fatalities include, perhaps most prominently, drug merchants who compete for commercial territory, but include also people who are robbed and killed by those desperate for money to buy the drug to which they have become addicted.
This is perhaps the moment to note that the pharmaceutical cost of cocaine and heroin is approximately 2 per cent of the street price of those drugs. Since a cocaine addict can spend as much as $1,000 per week to sustain his habit, he would need to come up with that $1,000. The approximate fencing cost of stolen goods is 80 per cent, so that to come up with $1,000 can require stealing $5,000 worth of jewels, cars, whatever. We can see that at free-market rates, $20 per week would provide the addict with the cocaine which, in this wartime drug situation, requires of him $1,000.

Speech at Zurich University (September 19, 1946) ( partial text http://www.churchill-society-london.org.uk/astonish.html) ( http://www.peshawar.ch/varia/winston.htm).
Post-war years (1945–1955)
Context: The salvation of the common people of every race and of every land from war or servitude must be established on solid foundations and must be guarded by the readiness of all men and women to die rather than submit to tyranny.

Some Reflections on Peace in Our Time (1950)

Source: Locksley Hall Sixty Years After (1886), Line 197

Source: Hunted

Source: Imperialism, The Highest Stage of Capitalism (1917)