Formally, the peace agreement was not signed for one particular reason: there is still a provision in the Armenian constitution that casts doubt on Azerbaijan’s territorial integrity.

Axar.az reports Azerbaijani President Ilham Aliyev made these remarks in an interview with Saudi Arabia’s Al Arabiya television channel.

"So, they will make an amendment, as far as we understand. As soon as this amendment to the constitution is made and territorial claims to Azerbaijan are deducted from the constitution, the formal peace agreement will be signed.

The fact that Azerbaijan and Armenia initialled this document at the White House, in front of President Trump, means that it’s the end of the war — a war that lasted in stages for more than 30 years — and it opens absolutely new opportunities for the South Caucasus region and the broader regions of Central Asia and the Middle East," the head of state said.