"Call to peace" is an antonym for "call arms". Instead of calling for weapons and war, calling for peace and resolution. "Call off arms" also serves as an antonym, meaning to cancel or cease military actions. Similarly, "call for diplomacy" is an antonym as well which refers to using negotiations and discussions to resolve conflicts without resorting to weapons. "Call for unity" is another antonym that promotes the idea of coming together and working towards a common goal without the need for violence. In a world full of conflicts, it's important to remember that there are always peaceful alternatives to every situation.