Each of these six squares has a solution. Together, they fit under a single theme.
Can you figure out all of the puzzles and name the theme?
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Lower left is obviously
Upper middle seems to be
Upper right is
the letter L highlighted at the intersection of SEOUL and ISTANBUL. Maybe something like between capitals or capital connection? (Although Istanbul isn't actually a capital any more ... maybe city connection then?)
I'm thinking the theme might be
films. Or maybe something more specific, but I'm not seeing the common thread between these specific productions yet.