Many people objected to the term 'suicide bombers' and so substituted the more correct 'homicide bombers.'
It's not "more correct". There are multiple types of bombers, and the adjective "suicide" describes the type -- that these aren't people planting bombs, but actually using suicide attacks.
The term "homicide bomber" is a politically correct inanity.
Also gotta love lines like this:
Experts expect the Raqqa battle to last longer than currently expected . . .