(AGI) Rome, Nov 17 - The euro closed at 1.2458 dollars onMonday after the European Central Bank said sovereign bondpurchases were part of the Eurotower's mandate. The yen closedstable against the euro at 145.07 and up against the dollar at116.4. The dollar reached a seven-year low of 117.4 yen afterthe news that Japan had slipped back into recession. . .