He
urged
signatories
of
last
December’s
watered-down
COP15
Copenhagen
Accord
to
work
on
an
“operational
architecture”
for
worldwide
greenhouse
gas
emission
cuts
at
the
upcoming
COP16
in
Cancún,
Mexico.
De
Boer,
the
executive
secretary
of
the
UN
Framework
Convention
on
Climate
Change,
announced
his
resignation
after
the
collapse
of
negotiations
in
Copenhagen.
He
is
expected
to
be
replaced
by
Costa
Rican
bureaucrat
Christiana
Figueres.
Although
the
COP15
talks
“did
not
deliver
the
outcome
in
legal
terms
that
many
had
been
hoping
for”,
de
Boer
says
it
was
“a
very
clear
signal
that
the
world…
