UPDATE: I spoke with Laura Peet of Diageo, and the banner is indeed real.
She explained that Diageo is sensitive to their local markets,
understand what is and is not acceptable in those markets, and they use
their iconic advertising to connect with and support local consumers
(and yes, admittedly, to advertise).
She mentioned that when looking at an ad like this with our eyes, we
may question its taste, but in the local markets this ad
has been viewed as being supportive of the area and the Lebanese people.
I did search around the Internet and it appears that web-sites which
focus on Beirut and Lebanon have been receptive and appreciative of
this particular ad.
It’s also important to keep in mind that Lebanon has a substantial
Catholic population and is not a wholly Muslim country as many people
believe, so an ad for an alcoholic beverage is not beyond the pale.