Russian President Vladimir Putin said Thursday that Patriot missile defense systems are "old" systems and Russia will "always find the antidote."

"In regards to Patriots, this is quite an old system and it doesn't work as well as our S-300," Putin said, when asked by a reporter to comment on the United States' decision to provide a Patriot system to Ukraine.

"Those who oppose us think this is a defensive weapon, that's what they say," Putin said. "But that's in their own mind and we'll always find the antidote."

"So those doing it are just wasting their time, it's just delaying the conflict," Putin said.

The Patriot’s radar system combines “surveillance, tracking, and engagement functions in one unit,” a description from the Center for Strategic International Studies (CSIS) says, which makes it stand out among other air defense systems. The system’s engagements with incoming aerial threats are “nearly autonomous” aside from needing a “final launch decision” from the humans operating it.