how to loop through a dict with lists and dicts that reference other vars dicts

jon1.yml

---
#!/usr/bin/env ansible-playbook
# vim: noai:ts=2:sw=2:et

# how to loop through a dict with lists and dicts that reference other vars dicts

# note that the dict keys dont have '-' but '_' so that jinja2 doesnt try and parse them as subtraction.

- name: Test for Jon

  connection: local
  gather_facts: no
  hosts: localhost

  vars:
    Networks:
      External_uk_1a:
        az: "uk-1a"
        cidr: "192.168.1.0/24"
        dns: [ 8.8.8.8, 8.8.4.4 ]
        gateway_ip: "192.168.1.1"
        router_name: "External-uk-1a"
        ext_net: "inf_az1_ext-net02"
      DMZ_uk_1a:
        az: "uk-1a"
        cidr: "10.1.1.0/24"
        dns: [ 8.8.8.8, 8.8.4.4 ]
        gateway_ip: "10.1.1.1"
        router_name: "DMZ-uk-1a"
      Protected_uk_1a:
        az: "uk-1a"
        cidr: "10.10.10.0/24"
        dns: [ 8.8.8.8, 8.8.4.4 ]
        gateway_ip: "10.10.10.1"
        router_name: "Protected-uk-1a"

    Firewalls:
      - Fortigate_uk_1a:
        ports:
          - network: "{{ Networks.External_uk_1a }}"
            security_group: "Any Any Permit"
          - network: "{{ Networks.DMZ_uk_1a }}"
            security_group: "Any Any Permit"
            fixed_ip:
              - "{{ Networks.DMZ_uk_1a.gateway_ip }}"
          - network: "{{ Networks.Protected_uk_1a }}"
            security_group: "Any Any Permit"
            fixed_ip:
              - "{{ Networks.Protected_uk_1a.gateway_ip }}"

  tasks:

    - debug: msg="{{ item.0.keys() }} {{ item.1.network }}"
#"
      with_subelements:
        - "{{ Firewalls }}"
        - ports

output

# LOOK at the msg: line.   If it was me i would add an additonal key/value pair to name the ports. I think you need this anyway when creating ports in OpenStack

# ansible-playbook  jon1.yml
 [WARNING]: provided hosts list is empty, only localhost is available


PLAY [Test for Jon] ************************************************************

TASK [debug] *******************************************************************
ok: [localhost] => (item=({u'Fortigate_uk_1a': None}, {u'security_group': u'Any Any Permit', u'network': {u'ext_net': u'inf_az1_ext-net02', u'gateway_ip': u'192.168.1.1', u'dns': [u'8.8.8.8', u'8.8.4.4'], u'cidr': u'192.168.1.0/24', u'az': u'uk-1a', u'router_name': u'External-uk-1a'}})) => {
    "item": [
        {
            "Fortigate_uk_1a": null
        },
        {
            "network": {
                "az": "uk-1a",
                "cidr": "192.168.1.0/24",
                "dns": [
                    "8.8.8.8",
                    "8.8.4.4"
                ],
                "ext_net": "inf_az1_ext-net02",
                "gateway_ip": "192.168.1.1",
                "router_name": "External-uk-1a"
            },
            "security_group": "Any Any Permit"
        }
    ],
    "msg": "[u'Fortigate_uk_1a'] {u'ext_net': u'inf_az1_ext-net02', u'gateway_ip': u'192.168.1.1', u'dns': [u'8.8.8.8', u'8.8.4.4'], u'cidr': u'192.168.1.0/24', u'az': u'uk-1a', u'router_name': u'External-uk-1a'}"
}
ok: [localhost] => (item=({u'Fortigate_uk_1a': None}, {u'security_group': u'Any Any Permit', u'fixed_ip': [u'10.1.1.1'], u'network': {u'gateway_ip': u'10.1.1.1', u'cidr': u'10.1.1.0/24', u'az': u'uk-1a', u'router_name': u'DMZ-uk-1a', u'dns': [u'8.8.8.8', u'8.8.4.4']}})) => {
    "item": [
        {
            "Fortigate_uk_1a": null
        },
        {
            "fixed_ip": [
                "10.1.1.1"
            ],
            "network": {
                "az": "uk-1a",
                "cidr": "10.1.1.0/24",
                "dns": [
                    "8.8.8.8",
                    "8.8.4.4"
                ],
                "gateway_ip": "10.1.1.1",
                "router_name": "DMZ-uk-1a"
            },
            "security_group": "Any Any Permit"
        }
    ],
    "msg": "[u'Fortigate_uk_1a'] {u'gateway_ip': u'10.1.1.1', u'cidr': u'10.1.1.0/24', u'az': u'uk-1a', u'router_name': u'DMZ-uk-1a', u'dns': [u'8.8.8.8', u'8.8.4.4']}"
}
ok: [localhost] => (item=({u'Fortigate_uk_1a': None}, {u'security_group': u'Any Any Permit', u'fixed_ip': [u'10.10.10.1'], u'network': {u'gateway_ip': u'10.10.10.1', u'cidr': u'10.10.10.0/24', u'az': u'uk-1a', u'router_name': u'Protected-uk-1a', u'dns': [u'8.8.8.8', u'8.8.4.4']}})) => {
    "item": [
        {
            "Fortigate_uk_1a": null
        },
        {
            "fixed_ip": [
                "10.10.10.1"
            ],
            "network": {
                "az": "uk-1a",
                "cidr": "10.10.10.0/24",
                "dns": [
                    "8.8.8.8",
                    "8.8.4.4"
                ],
                "gateway_ip": "10.10.10.1",
                "router_name": "Protected-uk-1a"
            },
            "security_group": "Any Any Permit"
        }
    ],
    "msg": "[u'Fortigate_uk_1a'] {u'gateway_ip': u'10.10.10.1', u'cidr': u'10.10.10.0/24', u'az': u'uk-1a', u'router_name': u'Protected-uk-1a', u'dns': [u'8.8.8.8', u'8.8.4.4']}"
}

PLAY RECAP *********************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=0