President Biden is making his final appearance at an international summit today, the G20 in Rio de Janeiro.

And this weekend, PBS News learned the president authorized Ukraine to fire long-range American weapons into Russia,

focused on the region of Kursk, which Ukraine seized in Moscow is trying to recapture.

Our Nick Schifrin sat down with National Security Advisor, Jake Sullivan,

for an exclusive interview this morning to discuss that authorization for Ukraine,

as well as the Middle East and President Biden's legacy on the world stage.

Jake Sullivan, thanks very much. Welcome to NewsHare.

Thanks for having me.

Two U.S. officials confirmed to me that the administration has given Ukraine authorization

to use attackums, the longest U.S. weapon, longest range U.S. weapon the Ukraine has in its

arsenal. Why have you made that decision?

Well, we don't have anything to announce or confirm on that today, so those remain unconfirmed

reports.

One thing I would point out though for context

is that Russia has just engaged in a massive escalation

in this war.

They have brought in a foreign army, North Korea,

North Korean troops, to the front lines of the battle.

And that represents a sea change in the nature of this conflict.

The Kremlin spokesman Dmitri Pascov today has responded saying that,

yes, there is no official confirmation and if there were, it would mean that there was

direct involvement of the United States in the war.

...