Actually, no, I really think they shouldn't. In such matters I think it's crucial to stick to just the facts and journalistic integrity (such as it is). Elevating personal opinion to the same level as wartime photography, reporting, data, etc. has dangerous ramifications for all involved. I'm aware that newspapers and other news/media outlets have bias, one way or another, but I think it important to draw a line and minimize that bias to the greatest extent possible; saying no to op-eds on war is such a line.
WRT to opinions and discussion on war, we have other kinds of media and public forums to serve that.
One starts to get the impression that they should just have the archeologists dig the tunnel in the first place, and budget the project like one big find.