He
was
visiting
the
United
States
when
____________________
____________________
came
to
power
in
____________________
and
did
not
go
back
to
Germany
,
where
he
had
been
a
professor
at
the
Berlin
Academy
of
Sciences
.
He
settled
in
the
U
.
S
.
,
becoming
an
American
citizen
in
____________________
.
[
7
]
On
the
eve
of
World
War
II
,
he
endorsed
a
letter
to
President
____________________
____________________
.
____________________
alerting
him
to
the
potential
developing
of
"
extremely
powerful
____________________
of
a
new
type
"
and
recommending
that
the
U
.
S
.
begin
similar
research
.
This
eventually
led
to
what
would
become
the
____________________
____________________
.
Einstein
was
in
support
of
defending
the
Allied
forces
,
but
largely
denounced
using
the
new
discovery
of
nuclear
fission
as
a
weapon
.
Later
,
with
the
British
philosopher
Bertrand
Russell
,
Einstein
signed
the
Russell
?
Einstein
Manifesto
,
which
highlighted
the
danger
of
____________________
weapons
.
Einstein
was
affiliated
with
the
____________________
____________________
____________________
____________________
in
____________________
,
New
Jersey
,
until
his
death
in
____________________
.
