ZURICH, March 21 (Reuters) – Days before a hastily convened press conference late on Sunday that would make the world’s front pages, Switzerland’s political elite were secretly preparing a move that would jolt the globe. While the nation’s central bank and financial regulator publicly declared that Credit Suisse was sound, behind closed doors the race was on to rescue the nation’s second-biggest bank. The chain of events, led to the erasure of one of Switzerland’s flagships, a merger backed by 260 billion Swiss francs ($280 billion) of state funds and a move that would upend global finance: favoring the bank’s shareholders to the detriment of bond investors. The events that…