Tel Aviv University offers emergency scholarship for research students from Ukraine (see attached). Further, I (Gil Cohen) have immediately available senior / students research fellows in theoretical computer science, coding theory, spectral graph theory, and adjacent mathematical branches.

Website: https://c1f423b8-ee8e-41b1-a3a7-2cfc865115ec.filesusr.com/ugd/d112fa_4de343bf5b3a410eae40b3853dcef087.pdf
Email: coheng@gmail.com