Armenians had been using the road to bypass a blockade on the main road, the Lachin Corridor. The move drew a rare rebuke from the Russian peacekeepers.
The U.S. and Russia have both made high-level contact with Armenian and Azerbaijani officials as the rhetoric from Baku is getting increasingly bellicose.
Five were killed in the shootout, which occurred four days after the most public meeting yet between Azerbaijani and Karabakhi Armenian representatives.
Bakhtiyar Hajiyev is recovering from a 51-day hunger strike, while activists say cybercrime against him has "endangered the lives" of women he interacted with.
Exports of Azerbaijani oil via the Black Sea were restarted but only temporarily, while exports of Russian crude oil through Azerbaijan have finally been halted due to EU sanctions.
Armenians declared victory in the case, but Azerbaijan already denies that it is blockading the road to Karabakh and it's not clear how the ruling will be enforced.
Baku appears to be retreating from the grand vision of a corridor connecting the Turkic world for the sake of a more local strategic goal: cementing control over Karabakh.