the development history of Middle East countries shuld also be written with the sweat, tears & blood of expatriate labour. ( I used the word "also" ) .

let us think, how the home countries of these expatriates function.

whether it is India, Pakistan, Bangladesh....... to UK or US.. take any nation, the nationals in those countries were involved in the jobs "A" to "Z" grades.

let us imagine a scenario - where all the expatriates are driven back home. How these countries will survive ? Do these nationals really "work" ?