German Chancellor Angela Merkel's decision on a government-coalition partner will be crucial to the future of a proposed financial-transaction tax for foreign exchange, experts say. "Merkel is the key player, and I think we'll see Germany pushing their agenda and the other countries probably following suit," said Mark Persoff of Ernst & Young. "The impact on the foreign exchange markets will obviously depend very closely on the political agreement on what the shape and scope of the FTT will be."

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