Ukraine's defense minister says his country has received Patriot surface-to-air guided missile systems, which Kyiv hopes will shield it from Russian strikes in the ongoing war.

Oleksii Reznikov said in a tweet, "Today, our beautiful Ukrainian sky becomes more secure because Patriot air defense systems have arrived in Ukraine."

Reznikov thanked the people of the United States, Germany and the Netherlands, without saying how many systems had been delivered.

He expressed his gratitude, adding, "Our partners have kept their word."