obso - on-s
- on term of complete equality
- on terms
- on that premise
- on the agenda
- on the air
- on the approaches to a city
- on the basis of equal chances
- on the basis of equality and reciprocity
- on the basis of equality, mutual benefit and nonintervention
- on the basis of mutual respect and noninterference in each other's internal affairs
- on the basis of priority
- on the basis of priority needs
- on the basis of smth
- on the brink of a conflict
- on the brink of an agreement
- on the brink of armed confrontation
- on the brink of bankruptcy
- on the brink of collapse
- on the brink of violence
- on the brink of war
- on the domestic scene
- on the entry into force
- on the face of it
- on the first leg of smb's African tour
- on the grounds of national security
- on the grounds of political unreliability
- on the high sea
- on the highest authority
- on the highest level
- on the instructions of smb
- on the international arena
- on the job
- on the last leg of one's visit
- on the occasion
- on the orders of smb
- on the orders of the government
- on the political right
- on the proposal of smb
- on the recommendations
- on the record