MOSCOW (AP) — Russian President Vladimir Putin has apologized to his Azerbaijani counterpart for what he called a “tragic incident” following the crash of an Azerbaijani airliner in Kazakhstan that killed 38 people. He stopped short of acknowledging that Moscow was responsible. The Kremlin said that air defense systems were firing near Grozny, the regional capital of the Russian republic of Chechnya, to deflect a Ukrainian drone strike as the plane attempted to land on Wednesday. Putin apologized to Azerbaijani President Ilham Aliyev “for the fact that the tragic incident occurred in Russian airspace.” The Kremlin also says Russia, Azerbaijan and Kazakhstan are jointly investigating the crash site near the city of Aktau in Kazakhstan.