I am an Astrologer.
Here is a good article explaining Mercury retrograde, it's too long to paste in :
All about Mercury Retrograde
It's interesting that Mercury is retrograde in the sign of LIBRA right now. Traditionallly, Libra is represented by the SCALES, and the principle of
JUSTICE. For this reason it is tied in with issues concerning LAW and ORDER and JUDICIARY MATTERS. Rather fits the current climate well, in relation
to new legislation being passed regards the Bailout.
There will be a full moon in ARIES on 15th. Aries is ruled by the planet MARS, who traditionally governs things like WAR and FORCE . Arian energy is
pretty "gung -ho", contentious and assertive. Aries initiates the change its desire nature seeks, using aggressive tactics if necessary. A full Moon
is an energy that brings issues to a HEAD. Rather like a volcano brewing for weeks until it SPILLS OVER. Things hidden before the full Moon come to
light, issues that have been gathering tension explode. This is usual with most full Moons but an Arian full Moon is the most "angry" moon energy of
all.
Usually I only look at Astrology transits in relation to how they might affect an individual, rather than the world at large. The branch of Astrology
that links transits to world events is not something I specialize in so I can't really offer any more insights sorry. From the Mercury passage and
the Full Moon on 15th, the best I can suggest is things really come to a head on the 15th and there will be alot of angry backlash.
As for ERIS....never heard of it !! I only work with the known planets, but some Astrologers like to incoprorate all sorts of other celestial bodies
into their interpretations, but to my mind it it not necessary so I don't bother.