Just pronounce it the way it's spelled, and if you're speaking English, that is the correct way. Join me in my militant quest to aggressively redefine what it means to "correctly" pronounce foreign words in English: go ahead and proudly say "g'nock-chi" for gnocchi and "buy frost" when you mean the Bifrost Bridge.
If someone gives you a hard time, smirk at them for being the unsophisticated provincial they are. "When I speak Japanese, I will say Kyoto with only two syllables, even accent on each. When I speak English, I shall proudly, without shame, pronounce it KEE-oh-toe. When I speak Dutch, I will pronounce Van Gogh with a soft consonant at the end. While speaking English, it shall remain van go."