Department of Defense officials insist there is no evidence of diversion or misuse of the billions of dollars in American weapons and security assistance that has been sent to Ukraine during its war with Russia.The House Armed Services Committee held a hearing Tuesday questioning defense officials on Ukraine’s usage of weapons and the potential that billions in aid from the United States to the war-torn country could be, or has been, misused or untracked.Rep. Mike Johnson, R‑La., asked defense officials about the importance of track …