There is concern in Seoul that Pyongyang's insistence on holding bilateral talks with Washington could drive a wedge between the U.S.and South Korea.

VOA: standard.2009.12.08

Trade barriers, transport costs and differences in taxes drive a wedge between prices in different countries.

ECONOMIST: How much burger do you get for your euro, yuan or Swiss franc?

Yet, you could try to drive a wedge between the natural rate and the real growth rate.

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Life, as the book is called, is hardly going to drive a wedge between The Glimmer Twins.

FORBES: Keith Richards, Capitalist