You also need to have an opposition figure who you can tell is likely to succeed with your assistance ahead of time, and who can make credible promises to pay you back (ie. with contracts for the rebuilding, contracts on oil extraction, etc.)

It's very clear how this played out in Libya, for instance, if you read the leaked Hillary Clinton emails. [0]

[0]: https://wikileaks.org/clinton-emails/emailid/12900