MOSCOW, Aug 27 (Reuters) - Russia warned on Thursday that it could strike British military targets inside and outside Ukraine in response to Ukrainian attacks on targets inside Russia using long-range British cruise missiles. The warning, delivered by Russian Foreign Ministry spokeswoman Maria Zakharova at a news briefing in Moscow, has been made before but without such rhetorical force or urgency. Zakharova said that London was just "one step away" from becoming legally complicit — in Moscow's eyes — for what she called "terrorism" against Russian civilians and warned of "inevitable catastrophic consequences" unless Britain changed course. Her reference to...