Possible responses if the Russian frigate incident escalated

What would have happened if the Russian frigate incident had escalated into a direct attack?

An air strike is suggested, with the available aircraft uncertain. The discussion treats sinking the frigate as war with Russia and anticipates wider NATO involvement.

An escalation beyond firing near the yacht is assessed as likely to bring an air attack on the Russian frigate. F-35Bs and other aircraft are suggested, but the exact forces present are explicitly uncertain. Sinking the frigate is treated as war between Britain and Russia, with an attack on a British unit bringing NATO obligations into the discussion. French and Dutch forces are mentioned as part of the wider allied context.