The embassy's chief of security was shot dead, and two other staff were wounded. The attack comes amid Azerbaijan's increasingly strained relations with Iran and blossoming friendship with Iran's archrival Israel.
Kyiv has long taken a pro-Azerbaijan position vis-a-vis the conflict with Armenia. Now officials say that Armenia and Russia are using the blockade to try to steal attention from Ukraine.
Azerbaijan's blockade of the Lachin Corridor comes as it accuses Armenia of dragging its feet over the fate of another critical route, the would-be Zangezur Corridor.