A deadly fire aboard a top-secret submarine in early July.
Russia's latest string of bad luck began with a fire aboard a secret deep-diving nuclear-powered submarine and resulted in 14 deaths.
Read more: The Russian submarine that caught fire and killed 14 may have been designed to cut undersea cables
Russian media reports that the submarine was the Losharik, a vessel designed for "intelligence gathering and, probably, the destruction of or tapping into of undersea communications cables," A.D. Baker, a former naval intelligence officer, previously told INSIDER.
A suspected fire that ultimately triggered an explosion in the battery compartment killed 14 Russian sailors, a number of which were higher-ranking and distinguished officers. While the incident remains classified at the highest levels, a Russian Navy official said the crew's actions had stopped a "planetary catastrophe," a possible reference to an accident with the sub's nuclear reactor.
A huge explosion at an ammo depot at a military base on Aug. 5.
On Monday, an ammo depot at a Russian military base in Siberia said to house around 40,000 artillery shells and other weapons suddenly exploded, igniting fires that killed one and injured over a dozen other people.
The explosion created a massive fireball, and led local authorities to evacuate thousands of people from surrounding communities within 20 kilometers of the blast.
Russia has experienced ammunition depot explosions before. For example, an ammunition storage site in Chapaevsk that housed around 13 million shells exploded in 2013, injuring around 30 people.
A deadly explosion of a missile engine at a military test site on Aug. 8.
On Thursday, a missile engine exploded at a Russian naval base, leaving two dead and four others injured. Among the dead and wounded were military and civilian personnel.
The engine, according to Russian state media, exploded while specialists at the base in the rural village of Nyonoksa, a town in northern Russia, were testing the rocket engine's "liquid propulsion system."
Read more: A rocket engine exploded at a Russian naval base, killing 2 people and injuring at least 4 others
The Nyonoksa range is a critical test site for Russian missile systems, everything from intercontinental ballistic missiles to cruise missiles. Thursday's explosion, the state-run TASS News Agency reported, triggered a spike in radiation in a nearby city.
Authorities insist everything is under control.
