'Destroy a forwarding rule.
:param  forwarding_rule: Forwarding Rule object to destroy
:type   forwarding_rule: :class:`GCEForwardingRule`
:return:  True if successful
:rtype:   ``bool``'

def ex_destroy_forwarding_rule(self, forwarding_rule):

    if forwarding_rule.region:
        request = ('/regions/%s/forwardingRules/%s' % (forwarding_rule.region.name, forwarding_rule.name))
    else:
        request = ('/global/forwardingRules/%s' % forwarding_rule.name)
    self.connection.async_request(request, method='DELETE')
    return True
