Swiss President and Finance Minister Eveline Widmer-Schlumpf (R) and Swiss Secretary of State in the finance department Michael Ambuehl attend a news conference after signing the agreement on a deal on taxing secret offshore accounts between Switzerland and Germany in Bern April 5, 2012. The deal, which will take effect from 2013, will prevent one country's prosecutors from pursuing tax offences in the other country, says the finance ministry. REUTERS/Pascal Lauener