American Mathematical Society recently issued the following announcement.
Community efforts are underway to provide opportunities in the US and Canada for displaced Ukrainian mathematicians. Here are two ways you can get involved.
Joint CRM-ISM initiative in support of mathematicians in distress
Prompted by the events in Ukraine, the Centre de recherches mathématiques (CRM) and the Institut des sciences mathématiques (ISM) are offering a program in support of mathematicians in distress due to war, oppression, and persecution. The objective is to provide a temporary safe haven to international researchers in mathematical and statistical sciences, so that they can continue pursuing their high-quality research and training goals in a secure and welcoming environment. Applications are open to researchers at all levels, from graduate students to senior faculty.
Original source can be found here.