1. A border or boundary area between two or more nations or territories where sovereignty, territorial rights, or control is disputed or subject to disagreement
The Kashmir region remains a contested frontier between India and Pakistan.
A região de Kashmir continua sendo uma fronteira disputada entre Índia e Paquistão.
2. An area of geographical or cultural significance where multiple parties claim authority or ownership
The Western Sahara is a contested frontier with competing claims of sovereignty.
O Saara Ocidental é uma fronteira disputada com reivindicações concorrentes de soberania.