Example

$ lono set_instances delete my-set --accounts 112233445566 --regions us-west-1 us-west-2
Are you sure you want to delete the my-set instances?
These stack instances will be deleted:

    accounts: 112233445566
    regions: us-west-1,us-west-2


Are you sure? (y/N) y
Stack Instance statuses... (takes a while)
Stack Instance: account 112233445566 region us-west-1 status CURRENT
Stack Instance: account 112233445566 region us-west-2 status CURRENT
Stack Instance: account 112233445566 region us-west-2 status OUTDATED reason User initiated operation
Stack Instance: account 112233445566 region us-west-1 status OUTDATED reason User initiated operation
Stack Instance: account 112233445566 region us-west-1 status DELETED
Stack Instance: account 112233445566 region us-west-2 status DELETED
Time took to complete stack set operation: 30s
Stack set operation completed.
$