President Volodymyr Zelensky said the bilateral security agreement between Ukraine and the U.K. signed on Jan. 12 is “unprecedented” and that this day “entered the history of our state.” The comments came after U.K. Prime Minister Rishi Sunak visited Kyiv on Jan. 12 and announced a 2.5-billion-pound ($3.2 billion) military aid package. Sunak and Zelensky also signed a new deal on security cooperation, the first bilateral commitment finalized as part of the security assurances announced by the Group of Seven (G7) last July. The security deal signed by Sunak and Zelensky stipulates London’s comm…