Despite efforts by Putin to attribute responsibility for the attack towards Ukraine, all significant evidence indicates that it was carried out by Tajik extremists inspired, aided and abetted by the Afghan-based group Islamic State Khorosan (ISIS-K).
Tajikistan, on the Russian border, is despotically-controlled country whose social and economic situations are amongst the worst in Central Asia, making large swathes of its population ideal fodder for radicalization.
Operating out of Taliban controlled Afghanistan, ISIS-K is now one of the more muscular regional terrorist groups which have been able to return to prominence since the return of the Taliban government in that country. In addition to its almost certain links to the Moscow attack, ISIS-K was also linked to bombings in Iran in January, killing more than 100 people. The group has also been linked to an attack on a church in Turkey and a foiled attack in Sweden.
The absence of a regional security consensus when the Americans left Afghanistan in 2021, has given rise to a fertile environment for regional jihadist groups to maneuver and grow.
U.S. military and intelligence commentators have estimated that the risks of further attacks emanating from Afghanistan are increasing.
Elsewhere in the region, violence in Pakistan by groups such as the Pakistani Taliban have been increasing and ISIS-K has begun operations in that country.
Most European countries have also assessed that the threat from ISIS-K is growing, with several operations in Germany and France having been foiled to date.
Beyond fertile national environments such as Afghanistan and Pakistan, the simple reality of regional wars in Ukraine and Gaza give rise to the kind of instability so helpful to radicalization and terrorist growth.
Once again, Canada will be susceptible to emerging threats of this kind, more than likely by radicalized lone actors using readily available weapons and tools.