MOSCOW (Sputnik) — According to the information received by the Russian Defense Ministry, tensions in the Nagorno-Karabakh region escalated late on April 1 and in the early hours of April 2.
"In light of the latest developments, on April 2, Russian Defense Minister Sergei Shoigu held telephone talks with his colleagues, Armenian Defense Minister Seyran Ohanyan and Azerbaijani Defense Minister Zakir Hasanov, on the necessity of urgent measures to stabilize the situation in the conflict zone," the press service said.
"The contested region and the self-declared Nagorno-Karabakh Republic are constantly being monitored by the Russian Defense Ministry," the ministry said in a statement.
The conflict between Armenia and Azerbaijan began in 1988, after the predominantly Armenian Nagorno-Karabakh autonomous region announced its secession from the Azerbaijan Soviet Socialist Republic. Nagorno-Karabakh proclaimed its independence in 1991, prompting a war that lasted until a Russia-brokered ceasefire was signed in 1994. In September 2015, the conflict escalated, with the sides blaming each other for violating the truce.