I have run terraform towards Azure, for creating a Check Point firewall management, with vnet and some misc… This worked all fine !
When I did a destroy, I got an error message and ended up deleting the resource-group manually in azure portal.
Now, after init, I run a 'plan" and it tells me that an interface was not found ? and this is true, it is absolutley not there anymore 
… might be a very noob question, but I do not understand why I am unable to plan and apply when everything is deleted in azure ? Is there som state file somewhere that messes this up or something ?