Countries with no military of its own

 1.  Vatican city 

                          World's smallest country don't have military of its own.  It relies on Swiss guards for protection 

2.  Costa Rica

                       Costa Rica has abolished its military.

3. Panama 

                  Panama don't have military force but has civilian led public force.

4.  Iceland 

                   Iceland has no standing army.  It relies on its coast guard , police force and NATO members.

5. Andorra 

                  Andorra relies on Spain and France for defence.