This study evaluates the impact of unconventional policy announcements by the European Central Bank (ECB) on the interconnectedness of sovereign credit default swaps (SCDS) markets in the European Union (EU) from 2009 to 2014. The findings suggest that ECB's unconventional policy measures reduced sovereign default risk not only in Eurozone nations but also in Central and Eastern European countries. To investigate the transmission of monetary policy effects across European countries, we employ the Diebold & Yilmaz connectedness framework along with an event-study approach. Our analysis reveals robust evidence of substantial positive spillovers from ECB monetary policy measures to all EU countries, effectively shielding the SCDS market from adverse shocks. Among various policy tools, we observe that asset purchase programs enhance overall connectedness, while mixed policy measures bolster within-cluster connectedness. Furthermore, our results highlight the efficacy of specific monetary policy instruments, indicating that asset purchase programs and quantitative easing are particularly effective in reducing sovereign risk. Keywords: communication strategy, financial markets, monetary policy, sovereign risk, Central and Eastern Europe