Our R&E friends in Poland need assistance during this epic human tragedy.
Poland’s R&E network, the Poznan Supercomputing & Networking Center, was established in 2003 and includes the PIONIER fiber-optic network, which is one of the most modern in the world: https://pionier.net.pl/en/
Poznan suggestions to help Ukrainian refugees:
https://pomagamukrainie.gov.pl/
Charity Navigator also provides resources to help, with a list of highly rated charities involved in humanitarian relief, recovery, and peace-building efforts:
https://www.charitynavigator.org/index.cfm?bay=content.view&cpid=9366