KYIV, Feb 29 – The Pentagon is exploring the possibility of using the remaining $4 billion in funding provided for military assistance to Ukraine, without guarantees of reimbursement for these expenses, CNN said, citing sources in the U.S. Department of Defense.

"The Pentagon is weighing whether to tap into the last remaining source of funding it has for military aid to support Ukraine's war effort against Russia even without guarantees that those funds will be replenished by Congress," the channel said.