public static function getRegion($locale)
    {
        $parts = explode('-', str_replace('_', '-', $locale));

        if (count($parts) === 1) {
            return '';
        }

        $region = end($parts);

        if (strlen($region) === 4) {
            return '';
        }

        if ($region === 'POSIX') {
            $region = 'US';
        }

        return strtoupper($region);
    }