Tanzania aims to secure credit ratings from Fitch and Moody's Investor Services in the next three months ahead of a debut Eurobond it expects to launch in the 2014/15 financial year, the finance minister said on Monday.The east African country, which has said the bond could be worth up to $1 billion, initially planned to launch it in the financial year ending in June. It has since said it would aim for the first quarter of the next financial year."We have a timeframe (for the rating) of the next three months," Finance Minister Saada Salum told Reuters on the sidelines of a Tanzania investment...