YEREVAN: Armenia and Azerbaijan have been able to agree on the basic principles for a peace treaty but are still `speaking different diplomatic languages`, Armenian Prime Minister Nikol Pashinyan said on Saturday, according to Russia`s TASS news agency.

The two countries have been at oddsfor decades, most notably over the breakaway Azerbaijani region of NagornoKarabakh, which Baku`s forces recaptured in September, prompting a mass exodus of ethnic Armenians from it.

But Pashinyan said there had been some progressin talks over a peace treaty even though he was cited as saying that the two countries still often struggled to agree on some things.`We have good and bad news about the ArmeniaAzerbaijan peace process,` TASS quoted Pashinyan as saying in Yerevan.

`It is good that the basic principles of peace with Azerbaijan have been agreed.

`This happened through the mediation of the head of the European Council Charles Michel as a result of my meetings with Azerbaijan`s president in Brussels,` Pashinyan said.

`The most important bad news is that we still speak different diplomatic languages and very often do not understand each other,` Pashinyan said.

Pashinyan said Armenia had also proposed swapping all Armenian prisoners for all Azerbaijani prisoners, TASS reported.-Reuters