Original sentence: By most accounts, Hamas performed better than Fatah in the second round of fighting.However, Fatah's armed forces are greater in numbers and security officials from Israel and the United Sates allege that Hamas downplayed its casualties.Some attribute this to the discipline and better training of Hamas' fighters, as most of the casualties have been from the Fatah faction
Edited sentence: By most accounts, Hamas performed better than Fatah in the latest round of fighting thanks to the discipline and better training of its fighters, and most of the casualties have been from Fatah.However, Fatah's armed forces are greater in numbers and security officials from Israel and the United Sates said that Hamas was downplaying its casualties