Olaf Scholz to join key European leaders at London defence summit / UPDATES -- German election winner Friedrich Merz arrives at Chancellery in Berlin to meet with outgoing Chancellor Olaf Scholz / UPDATES -- Outgoing German Chancellor Olaf Scholz has taken responsibility for his Social Democratic Party's defeat in the federal election / 'I bear responsibility': German chancellor Olaf Scholz on election defeat / On the Ropes, Olaf Scholz Keeps Punching / Germany's Olaf Scholz, Friedrich Merz hold rallies in final days ahead of federal election / Olaf Scholz and Friedrich Merz face off in final debate ahead of German election / WATCH LIVE -- Chancellor Olaf Scholz and main challenger Friedrich Merz square off in German election TV debate / WATCH LIVE -- German Chancellor Olaf Scholz addresses World Economic Forum in Davos, Ukrainian President Zelenskyy to speak next / Olaf Scholz still thinks he can win re-election as chancellor