 phenomenon particularly worrying because it give rise or exacerbate tensions not only countries of origin and countries of destination but also between countries of origin
This phenomenon is particularly worrying because it may give rise to or exacerbate tensions, not only between countries of origin and countries of destination, but also between countries of origin and transit countries.
This phenomenon particularly worrying because it give rise or exacerbate tensions, not only countries of origin and countries of destination, but also between countries of origin and transit