A Ukrainian group says it's wreaking havoc on Russian occupiers, from directing missile strikes to trolling them with the national anthem

• A secretive Ukrainian group detailed its acts of sabotage against Russian occupiers in Ukraine.
• The National Resistance Center aims to inflict psychological pressure on Russian troops.
• Their operation has grown so much it has now become "uncontrollable" for Russia, a spokesperson said.

A secretive group of Ukrainians took responsibility for what it called a string of devastating sabotage attack on Russian-held territory.