Since mid-September they have been further complicated by border tie-ups, tighter security checks and increased shipping costs.

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Cross border equity tie-ups between financial firms have enjoyed mixed success to put it mildly (think HSBC and Household Finance in the 2000s, or Deutsche Bank and Morgan Grenfell in the 1990s).

FORBES: Mitsubishi UFJ Financial Group--A Megabank View Of Japan's Economy (3)

In cafes and houses either side of two countries' border, tens of millions will tune in for the stand-out tie of the Asian Cup so far.

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