Swiss investor adviser calls for Credit Suisse chairman to go

ZURICH (Reuters) - Prominent Swiss investment adviser Ethos Foundation has called on Credit Suisse Chairman Urs Rohner to step down to take responsibility for the Swiss bank's spying on executives.The intervention comes as investors take sides over whether Rohner, Chief Executive Tidjane Thiam, or both should be held mainly to blame for a scandal that has rocked Switzerland's second-largest bank.The crisis erupted in September when Credit Suisse's former star wealth manager Iqbal Khan, who had..