Fierce fighting erupted in Nagorno-Karabakh, in the Caucasus region. The enclave is recognised as part of Azerbaijan, but has been controlled by ethnic Armenians since a war ended in 1994.
The latest intense fighting began on Sunday with both Armenia and Azerbaijan blaming each other for the escalation.
 Turkey has already declared its support for Azerbaijan, while Russia – which has military bases in Armenia but is also friendly with Azerbaijan – called for an immediate ceasefire.

Karabakh is the Russian rendering of an Azeri word meaning “black garden”, while Nagorno is a Russian word meaning “mountainous”. Ethnic Armenians prefer to call the region Artsakh, an ancient Armenian name for the area.