Germany's prosecutor-general said on February 5 that his office had collected "hundreds" of pieces of evidence showing war crimes by Russian forces in Ukraine, calling for an international effort to bring leaders to justice. "At the moment we are focusing on mass killings in Bucha and attacks on Ukraine's civil infrastructure," prosecutor Peter Frank told the Welt am Sonntag newspaper. He said the goal was now to "prepare for a possible later court case -- whether in Germany or with our foreign partners or an international court."