Tonight breaking news President Biden's surprise debate challenge to Donald Trump.

Tonight Donald Trump saying yes, both agreeing to two presidential debates, one right here on ABC.

Also tonight the chilling images,

the attempted assassination overseas.

And here at home, we're tracking severe storms

on the move right now.

First, tonight, the debate showdown

between President Biden and Donald Trump.

President Biden issuing that challenge,

former President Trump accepting the first debate

before the conventions on CNN,

the second debate in September right here on ABC.

Mary Bruce live at the White House tonight,

both Biden and Trump convinced

they can outperform the other.

Also tonight the troubling images,

the attempted assassination of the Prime Minister of Slovakia.

The leader shot multiple times at close range.

He is now in what authorities are calling a life-threatening condition.

His security detail pushing him into the car.

Here in the U.S. tonight another bridge accident, a massive barge hitting a bridge near Galveston, Texas,

causing partial collapse in an oil spill in that bay. Crew members pulled

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