By Max Baco. ST JOHN’S, NL . When a nation is under attack, one might think that the only way to fight back is to fight tanks with tanks. For Brian Cherwick, leader and founder of the Kubasonics, a Ukrainian band based in St. John’s, his way of fighting the war is through creating lively, upbeat and fun music. Brian and the Kubasonics’ lively Ukrainian music is their way to counter one of Russia’s excuses for starting the war – that Ukraine is not a real country and that its culture doesn’t exist. “I’m living proof that it exists,” said Cherwick. “By