Two Balkan states signed an agreement that will allow North Macedonia and Albania to formally start negotiations to join the European Union, a process long-delayed by bilateral quarrels between countries in the volatile region.

Bujar Osmani, North Macedonia’s foreign minister, signed the protocol with his Bulgarian counterpart in Sofia, Bulgaria’s capital, on Sunday.

The move came a day after North Macedonia’s parliament approved a European Union proposal that aims to help resolve a Balkan dispute and unlock the organization’s enlargement.