Luke Garrett

NPR also confirmed this reporting.

The Pentagon denied it.

Senator Mark Kelly, an Arizona Democrat who sits on the committee, told CNN an investigation is needed.

Fellow committee member Senator Mark Wayne Mullen, a Republican from Oklahoma, denied the reporting but said on CNN, These individuals don't care about the lives of our friends and families.

Why do we care if we take them out in international water?

The inquiries mark a rare case of oversight from the GOP-led Congress.

Luke Garrett, NPR News, Washington.

Committee leaders referenced a Washington Post report that a follow-up strike on survivors of an initial strike was conducted in keeping with Defense Secretary Pete Hex's order to kill everyone on the boats.

NPR also confirmed this reporting.

The Pentagon denied it.

Senator Mark Kelly, an Arizona Democrat who sits on the committee, told CNN an investigation is needed.

Luke Garrett, NPR News, Washington.

The initial U.S.

plan has Ukraine giving up land over to Russia, reduces Ukraine's army by 30 percent, and bars NATO expansion.

Democrat Senator Mark Warner of Virginia tells Fox he doesn't like it.

And Republican Representative Michael McCaul of Texas criticized it on ABC News.

I would not advise Ukraine to sign this.

But Missouri Republican Eric Schmidt approves of the peace plan.

President Trump has faced growing pressure from his right flank to refocus on domestic issues over foreign wars.

Luke Garrett, NPR News, Washington.