 Complete the following phrase:  Meanwhile, Stilichos reputation was waning and his relationship with Honorius deteriorating, leading to Honorius ordering his execution in Ravenna in 408, together with Eucherius and Serena, who were in Rome with Placidia. According to Zosimus, the nobilissima puella Galla Placidia approved the Roman Senates decision to execute Serena. All this happened against a background of Visigothic advances, laying siege to Rome in both 408 and 409, and finally 