The issue focused on a new report issued by the National Academy of Sciences and found that the U.S. military is spending nearly half of the budget on research and development for weapons systems it doesn't need — a significant gap compared to previous administrations.

The report also called for an overhaul of the military's acquisition system and said some weapons systems could be scrapped without affecting other programs.

"The Pentagon should consider scrapping the current system in which military acquisition decisions are based on cost savings and the potential