The Netherlands and Romania announced a Patriot air defense system each for Ukraine last week.
Amsterdam’s announcement follows it securing Patriot parts for an assembled system.
The Dutch initiative was launched some time ago and involves an unknown country.
A total of three Patriots are operational in Ukraine presently with pledges from the US and Germany to send a system each.
Romanian Decision
Meanwhile, the Romanian announcement was made during a Supreme Council of Defense meeting on Thursday, led by President Klaus Iohannis.
The decision is conditional on negotiations for a replacement with allies, the Romanian presidency said.
“This donation is made on the condition that our country continues its negotiations with the Allies, especially with the American strategic partner, in order to obtain a similar or equivalent system,” the announcement read.
Romania has a pair of operational Patriots.