Way too much. It would almost be tolerable if it were:

  my $country = $card->country;
  $country = $country eq 'gbr' ? '' : uc "[$country]"
    if $country;
[download]

but maybe that's just me. I always put postfix modifiers on their own line, indented, unless they are for control constructs. I find them much more digestible.

<tongue where='in-cheek'>
The proper way to do this would of course be something like:

my $country;
eval {
  my $countryId = Country::Identifier->new(id => $card->country);
  $country = Country::Factory->new(id => $countryId);
  my $cntry_formatter =
    Formatter::Factory->new(action => sub { "[" . shift() . "]" });
  $country->apply(Iterator->new(type => "closure",
                                args => [ $cntry_formatter ]));
}
[download]

but I don't have quite enough room left in the margin of this post for the error handling.
</tongue>