Both Christian Armenians and Muslim Azerbaijanis view the fertile valleys and mountains of Nagorno-Karabakh as their ancestral lands.
NATO Secretary-General Jens Stoltenberg announced the diplomatic opening on the military alliance's website the same day that Turkey announced that Russia plans to conduct live-fire naval exercises this month in the eastern Mediterranean.
The two leaders have also addressed steps to enhance bilateral relations, especially in tourism, transport, energy, and economy, and the fight against the novel coronavirus pandemic.
On Saturday, Turkey's Defence Minister said the ceasefire was still holding, and no violations had taken place since the agreement came into effect on Thursday, March 5.
Russian S-400 air defence system is seen as one of the most advanced missile systems in the world, capable of tracking several targets simultaneously.
During his visit to Moscow, Turkish President Recep Tayyip Erdogan will discuss bilateral relations as well as regional and global developments with his Russian counterpart.
The Syrian Observatory for Human Rights had earlier said that a rebel group Failaq al Sham is withdrawing its forces and heavy arms from the demilitarised zone in Syria's Idlib.
Relations between Turkey and Russia continue to reach new heights as the banning of all flights to Turkey have been officially lifted by Russia.
US State Department says it is in close contact with Turkey and other partners in the fight against DAESH
In an exclusive interview with TRT World, Turkey's Foreign Minister Mevlut Cavusoglu said Ankara and Moscow had turned a new page in diplomatic ties which would go beyond just economic cooperation
A Turkish presidential source says President Recep Tayyip Erdogan & Russia's President Vladimir Putin will on Wednesday have a telephone discussion to improve relations.
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