Because swiss account are secure in everyway. There are very hard and fast rule about the privacy of account and its almost impossible to trace the account holder. They don't share a speck about anyone. And there procedures for account holders are also different(who want to gain access to their account). In other countries they don't take care of so much security.

But in zardari case, the matter is different, i don't know how some people in pak come to know about his account in swiss bank. Moreover it's high profile case and past government were involved in reopening the case and unveil the huge amount in swiss banks..

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