Переклад - Англійська-Арабська - The Baloch-speaking population is estimated to be...

Hello lkjhgfd,
Your translation is incomplete.
In the original text:
"the exact number of Baloch and those who are or claim to be of Baloch ancestry is difficult to determine"
So it talks about two groups:
1.The Balohs
2.These who claim to be of Baloh ancestry.
and note the word "claim".
Try to edit your text taking both groups into consideration.