Azerbaijan has sent troops backed by artillery attacks into Armenian-controlled Nagorno-Karabakh, warning that its operation would not stop until Armenian forces surrender.
The attacks on Tuesday raised the threat of a new war in the ethnic Armenian region of Azerbaijan, which has been a flashpoint since the collapse of the Soviet Union. It is internationally recognised as Azerbaijani territory but part of it is run by separatist Armenian authorities who have said the area, with a population of about 120,000, is their ancestral homeland.
