There are multiple documented instances of this happening where Israel is the one who denies the visa or fails to provide it. https://www.hrw.org/news/2007/11/

There are multiple documented instances of this happening where Israel is the one who denies the visa or fails to provide it. https://www.hrw.org/news/2007/11/19/gaza-israel-blocks-670-students-studies-abroad https://www.hrw.org/news/2007/11/19/gaza-israel-blocks-670-s... https://www.independent.co.uk/news/world/middle-east/palestinian-student-gaza-exit-visa-london-goldsmiths-mps-israel-university-mohammed-awad-a7968191.html https://www.independent.co.uk/news/world/middle-east/palesti... From a cursory reading[1], it seems Israel had for a long time the ability to veto any human's exit from Gaza through the Rafah crossing in Egypt. Seems to only be the last 5 years where they were not able to do this and that border crossing was open. I graduated from University in 2017. [1] https://en.m.wikipedia.org/wiki/Rafah_Border_Crossing https://en.m.wikipedia.org/wiki/Rafah_Border_Crossing