Why did Switzerland surrender?

Why did Switzerland surrender?
Ayn R. Key
by Ayn R. Key

"In early August, Swiss bank UBS gave in to demands by the United States
to divluge the names of over 4000 accounts. Normally this would be in
violation of Swiss banking secrecy laws, but somehow Secretary of State
Hillary Clinton convinced the Swiss government to allow this. The Swiss
reported that UBS had no real choice in turning over the names. The
mystery is why the Swiss give in." (08/28/09)