June 7 (Bloomberg) -- Robert Sinche, global head of foreign exchange strategy at Royal Bank of Scotland Plc, and Doug Borthwick, head of foreign exchange trading at Faros Trading LLC, discuss the possibility of a Greek exit from the euro zone and what it would mean for global currencies. Sinche and Borthwick speak with Bloomberg's Scarlet Fu and Josh Lipton on "Bloomberg On the Economy." (Source: Bloomberg)