I found a surprisingly large amount of good information for analysis in this short editorial.
First I want to comment on the title. "Gadhafi's death is only the beginning". This gives readers a sense of foreboding and fear that there will be more problems in Libya after the erstwhile dictator's death. As readers read on, the readers are shown other possible problems such as the possibility of the rebels "splintering" to create a new dictatorship.
Second, another thing that is interesting is the syntax of the first paragraph. The author starts out with "It's hard to recall a time when so many tyrants and terrorists met such fitting ends." The author then lays out many examples of "tyrants and terrorists" who were disposed of in the past couple of months. The structure is effective and the first paragraph serves as a good intro to the rest of the editorial. Also the last paragraph is a carefully constructed piece of syntax. The author points out the effects of the Arab Spring and how the U.S. could possibly improve their relations with the Middle East. However, back to the "tyrants and terrorists" the author finishes the editorial with, "Patient persistence should keep the tally of fallen despots and failed terrorists growing, with Syrian leader Bashir Assad the next likely candidate to join the list."
Lastly, the author uses diction to show the tyrants and terrorists in a bad light. The use of words such as "demise" and "despotic" suggests that the author thinks that these people deserved what they got and the world is a whole lot better without them.