Ukrainian special forces operatives launched simultaneous attacks on four Russian strategic bomber bases and the home port of the Russian Northern Fleet early Sunday. The attack was reportedly a year-and-a-half in the making and involved a novel means of delivery and the first use of autonomous drone swarms.

This is what we know as of this writing

The targets were:

• Olenya Air Base in the Murmansk Region 
• Belaya Air Base in the Irkutsk Region 
• Ivanovo Air Base in the Ivanovo Region 
• Dyagilevo Air Base in the Ryazan Region 
• Severomorsk (Main Administrative Base of the Russian Northern Fleet) in the Murmansk Region