It’s awfully hard to believe Credit Suisse when it says Tidjane Thiam knew nothing at all about the apparently KGB-level spying operation at the bank. There are lots of reasons for skepticism, including the effort’s size, apparent undertaking on Thiam’s behalf, and, oh yea, the fact that it either lied (probable) or didn’t know (less likely) when it said that the botched surveillance of former Thiam lieutenant Iqbal Khan was an isolated incident, which it was not, and in any event Thiam didn’t know anything about any of it, no matter how many people were being tailed by P.I.s.