Through the centuries, three main viewpoints have emerged from within the church in response to the question of war: 1. Some believe no war is justifiable (a position called pacifism). 2. Others believe Christians must submit to their government and agree to fight in any war it engages in (a viewpoint known as activism). 3. But the majority of Christians hold the view that believers may support or join in defensive wars against evil aggressors – a position known as the just war theory.