Renjifo,
who
is
also
a
board
member
at
state
oil
company
Ecopetrol,
will
replace
Mauricio
Cardenas,
who
is
leaving
the
job
to
become
finance
minister,
Dow
Jones
reported.
The
changes
by
President
Juan
Manuel
Santos
to
his
cabinet
began
last
week,
and
they
come
as
he
sees
his
popularity
ratings
decline.
Santos
has
been
in
office
for
half
of
his
four-year
term
and
may
run
for
re-election
in
2014.
Renjifo
takes
the
reins
of
the
energy
sector
at
a
critical
juncture
for
Colombia,
which
saw
an
improvement
in
security
over
the
past
decade…