President of Ukraine Volodymyr Zelenskyy had a phone conversation with the Prime Minister of the United Kingdom Rishi Sunak. One of the topics discussed was the strengthening of Ukrainian air defense systems, according to the head of the Ukrainian state on Telegram. Zelenskyy noted that he informed Sunak about the recent terrorist attacks by Russians on Ukraine. Over the past five days, the occupiers launched at least 500 rockets and drones. The head of state also thanked Sunak for the significant assistance from Britain in strengthening the Ukrainian air defense systems, including radars, adv…