Onye isi ala mba Tanzanịa, bụ John Magufuli, enyela ntụzi aka ka e leba anya n’ọrụ ngo nke ndị Petra Diamonds Ltd. 
Onye isi ala mba Tanzania, bụ John Magufuli, enyela ntuzi aka ka e leba anya n’orụ ngo nke ndị Petra Diamonds Ltd. 