SSAs on nuclear knife-edge as Japanese sell-off scares market.

The article discusses bankers' warning about the impact of possible forced sales from Japan on the sovereign, supranational and agency (SSA) sector. It describes the role of Japanese institutions in several SSA deals, such as the Japanese government's purchase of more than 20 percent of the European Financial Stability Facility's debut issue in January 2011. Some financial analysts feel that Japanese investors will stop buying paper in the short term after the March 2011 earthquake in Japan.