1‘guys who are constantly harping on about the war’
keep on about, go on about, persist in talking about, keep talking about, labour the point about, dwell on, expatiate on, elaborate on, expound on, make an issue of, discuss something at length
complain repeatedly about, nag someone about, badger someone about
informal witter on about, rabbit on about, hassle someone about
We take a look at several popular, though confusing, punctuation marks.