How were Frances desires for (Belgian) Congo in 1958-1960?
France had no desires over the Belgian Congo at that time. I think you are confusing the Republic of Congo (which was part of French Equatorial Africa until 1960) with the Democratic Republic of Congo (which was the Belgian Congo until 1960) from 1958-1960 – a very short period of time historically, France was working towards granting independance to their former colony – part of which is now the republic of congo.