Complex sentence: SPECTRE demands £100 million in white flawless uncut diamonds from NATO in exchange for returning the bombs; if their demands are not met, SPECTRE will destroy a major city in the United States or the United Kingdom.
Split into simpler sentences: SPECTRE demands £100 million in white flawless uncut diamonds from NATO in exchange for returning the bombs. If their demands are not met, SPECTRE will destroy a major city in the United States or the United Kingdom.