I didn't say anything about pacifism, but I also disagree with your proposition equating violence and politics. Violence is a breakdown of politics. Politics, almost definitionally, is how a people settle disputes without violence.
Politics is how how decisions are made in groups. If one person or group is forcing their will upon others, then no decision or compromise between the parties can be said to have been made freely. And therefore it cannot be truthfully described as following a political process.
It is, but diplomacy refers to disputes between peoples. Politics refers to disputes within a people.