Austin's speech was broadcast on the Pentagon website.
In particular, he thanked the Czech Republic for the fact that she recently handed over to Kyiv "helicopters of fire support, tanks and missile systems."
Austin also said that Denmark will transfer Harpoon anti-ship missiles and launchers to Ukraine.
Earlier, Czech President Milos Zeman allowed 103 Czech citizens to join the Ukrainian Armed Forces.
Prior to this, the head of the Czech parliamentary committee on European affairs, Ondrej Benesik, announced that the Czech Republic had sent T-72 tanks and BMP-1 armored personnel carriers to Ukraine.