When Jesus commanded his disciples to love their enemies, did he mean that they should never kill them?

Christians must live out our belief that Christ is Lord, and think and pray for wisdom to act politically in ways that best reflect this. But how, exactly, do we let Christ be Lord of our politics? And what are the political issues we should act on?

In the face of ISIS, preaching nonviolence can seem naïve, even heartless. But does the Just War tradition give its adherents a blank check in such a situation? Ron Sider has a challenge for both sides of this debate.