War contributes greatly to global warming, which shouldn’t surprise us. All those bombs going off, all those rockets, all those planes and helicopters. All that fuel of various kinds being used. It pollutes the air and water of this very fragile and interconnected planet.

In this remark, Walker links militarism to ecological crisis, insisting that war’s environmental costs are not abstract but materially produced through explosions, aviation, and the massive combustion of fossil fuels that accompanies modern conflict. The catalog of weapons and vehicles underscores the scale and routine nature of this pollution, while the phrase “fragile and interconnected planet” frames environmental harm as globally shared and system-wide rather than confined to battlefields. The quote also functions as a moral argument: if climate change is a collective threat, then war is doubly destructive—killing directly and degrading the conditions for life indirectly through air and water contamination.