Solutions An agreement between countries has 10 entries with similar clues
- pactA formal agreement between individuals or parties
- amityPeaceful relations between countries
- treatyFormal agreement between states
- detenteThe easing of unfriendly relation between countries
- marchesA land on the border between two countries
- ententeFriendly agreement between states
- davis-cupAn annual tennis championship for men played between teams from different countries
- indentureany deed, contract, or sealed agreement between two or more parties
- internationalpossibly not a trainline between countries
- brahmos-missileMissile that is a joint venture between India and Russia and named after rivers from the countries