Mr. Jain, 49 years old, played a central role in building Deutsche Bank's investment-banking business over nearly two decades as it reached beyond its staid commercial-banking roots. Investment banking now generates about 70% of the overall bank's profits most quarters. He takes the [CEO] post at a time when many analysts consider the lender one of the least well capitalized among its investment-banking peers. The bank also faces a litany of legal problems on both sides of the Atlantic. Those who know Mr. Jain say he will cut the fat at the banking giant, sell businesses that don't meet profit goals and shutter others. [WSJ]