I find intensive marketing/PR efforts are often inversely correlated with the claims being made - whether it's products or geopolitics. Israel certainly engages in very intense marketing on certain fronts, but truth cannot be obscured forever. In Physics the law of conservation includes not only matter and energy, but also information (Information cannot be destroyed from the Universe).
I don't understand the modern effort to engage in 'information warfare' as a thing in and of itself. Each time it collapses and people sees what was 'really' happening, it just makes them that much less likely to believe you next time. And you also create a significant number of perpetually jaded people who will basically never believe you again, even when you're telling the truth. Countless politicians have proudly paraded around their pristine, seemingly untouched, copies of Meditations, but perhaps they should go for more foundational works, like The Boy Who Cried Wolf.