Prime Minister Eduard Heger says Slovakia has donated its Soviet-era S-300 air defense system to Ukraine.
The comments from Heger came as he was visiting the Ukrainian capital of Kyiv with top EU officials ahead of a planned meeting with Ukrainian President Volodymyr Zelenskyy on Friday.
Zelenskyy mentioned S-300s by name when he spoke to U.S. Lawmakers by video last month, appealing for defense systems that would allow Ukraine to "close the skies" to Russian warplanes and missiles.
NATO members Bulgaria, Slovakia and Greece have the S-300s, which can fire missiles hundreds of kilometers (miles) and knock out cruise missiles as well as warplanes.
Slovakia previously said it was willing to give its S-300 to Ukraine on condition that it has a proper replacement.