"The war in Ukraine has the potential to turn into an exchange of nuclear attacks"

He pointed out that the US would be partly responsible for sending weapons.

"If that happens, it would be partly because the US has sent weapons into the conflict."

"The behavior of Congress and the Biden administration is madness," Kennedy wrote on his X Network account.

He stressed that Washington should instead do everything possible to avoid a US confrontation with adversaries that have powerful nuclear arsenals.

In the announcement, he set instructions for voters to ask their representatives in Congress to end the war in Ukraine as soon as possible.