Disarm

干戈を収める

kanka o osameru

(to lay down arms)

武器を捨てる

buki o suteru

(to lay down arms)

武装解除する

busō kaijo suru

(to deprive of arms)

軍備を縮小する

gunbi o shukushō suru

(to reduce the size of one's own military forces)

軍縮する

gunshuku suru

(to reduce the size of one's own military forces)