The starting point
Enough to retire is not a single number.
Two households can have the same assets and need very different retirement plans. One may own a home outright and expect to remain in one country. The other may support family in two places, rent, and want the option to move again. A target portfolio value without the spending and timing behind it tells you very little.
Begin with the life the money has to support. What do you expect to spend in the first years after work? What could change later? Which expenses are fixed, and which would you be willing to adjust if markets fell? Even rough answers make a more useful starting point than a return target picked in isolation.
A review should connect cash, investments, accessible pensions and expected proceeds to those needs. It should also distinguish money available now from money that is locked up, uncertain or intended for someone else.

