YEREVAN/BAKU—Armenian and Azeri forces exchanged fierce fire for a second day on Monday over the territory of Nagorno-Karabakh, with the sides accusing each other of using heavy artillery amid reports of at least 21 deaths and hundreds of people being wounded.
The clashes between Armenia and Azerbaijan, the heaviest since 2016, have rekindled concern over stability in the South Caucasus region, a corridor for pipelines carrying oil and gas to world markets.
