The U.S.'s Training Ukrainian Forces on How to Operate and Maintain Abrams Tanks

NATO Secretary-General Jan Stoltenberg made his first visit to Kyiv since Russia launched its invasion. President Zelensky pushed for even more, reiterating his call for a fast-track admission into NATO. CNN's Tom Costello went on patrol in the North Sea looking for Russian subs and vessels disguised as fishing boats. Up next, U.S. officials try to speed up new credibility to deploy new tanks to the front lines.