Armenia said on Thursday it had recalled its ambassador to Israel for consultations over Israeli arms sales to Azerbaijan.
Azerbaijan has acknowledged using Israeli-made weapons in its fighting with ethnic Armenian forces around Nagorno-Karabakh, where heavy clashes this week have drawn international calls for an immediate ceasefire.
Protesting against the Israeli weapons exports, Armenian foreign ministry spokeswoman Anna Naghdalyan said "Israel's work style is unacceptable. The ministry has to call back its ambassador in Israel."
The Foreign Ministry said in response: "Israel regrets Armenia's decision to recall its ambassador. Israel sees great importance in its relations with Armenia and sees the Armenian Embassy in Israel as an important tool for promoting this relationship for the benefit of both peoples."
Asked for details on weapons sales to Azerbaijan, an Israeli defense ministry spokeswoman declined to comment.
According to the Stockholm International Peace Research Institute (SIPRI), a leading conflict and armaments think-tank, Israel provided Azerbaijan with some $825 million in weapons between 2006 and 2019.
Those exports included drones, loitering munitions, anti-tank missiles, and a surface-to-air missile system, information from SIPRI's Arms Transfers Database showed.
Separately, in an interview with Israeli media on Wednesday, Azeri presidential aide Hikmat Hajayev said Azerbaijan was using "some" Israeli-made drones in fighting around Nagorno-Karabakh, without specifying how many.
"(We) have one of the strongest (drone) fleets in the region. And among them we have Israeli ones, we have other drones as well, but Israeli drones especially, including reconnaissance and attack drones, and kamikaze 'Harop' drones, (which) have proved itself very effective," Hajayev said.