Naturally

On the first image, an oversized Triangle-person is shown holding a shield against a group of houses with tiny people beyond a dashed line: “Morally, we should have the right to self-defence.”

On the second image, the same person is shown wearing glasses and studying a long scroll titled “Sun-Tzu, Art of war”, which shows some military diagrams. The person now says: “Practically, the best defence is offence.”

On the final image, the Triangle person is shown straddling a tank, squinting, brandishing a saber and pointing vaguely forward. The tank has already crossed the dashed line, and is in a process of squishing the houses and the tiny people with a crunch. The Triangle-person screams: “So, naturally… CHAAARGE!”