A lighthouse Won't Fit Under the Rug

Imagine you are working at, say, the White House, and people around you are deciding to invade a foreign country and overthrow its dictator. But, no one, it seems, is spending a lot of time planning for what to do with that foreign country once the job of overthrowing the dictator is accomplished.

Influenced by Persian culture, you might point out the importance of planning by saying:

First dig the hole, then steal the lighthouse.

(Aval chAh ro bekan, ba'dan menAr rA bedozd).