Big commercial and industrial firms have contributed many thousands of rupees to a defense fund that burns the money in the form of gunpowder, but unfortunately, if they are asked to contribute liberally to advance the Krsna consciousness movement, they are reluctant. Under the circumstances, the world will periodically suffer from such upsurges and outbreaks of war, which are the consequences of not being Krsna conscious.

Srila Prabhupada, SB 4.20.21, ppt.