LONDON—Prince Harry of Wales caused yet another headache for the royal family this week as reports surfaced that the military base in Afghanistan where the wayward young royal was stationed had been invaded by Taliban insurgents. “Oh, dear, dear Harry—when will he finally grow up?” said a member of the royal family, who declined to be named. “Frankly, we thought he had left this wild phase of his life behind him, but it is obvious that he still has a lot of maturing to do.” At press time, sources confirmed that two U.S. Marines had been killed in the embarrassing fiasco.