in Syria and in return, Russia will not target Israeli aircraft nor repel Israeli strikes. 2022 - Ukraine According to Ukrainian sources, on 25 February 2022, the Su-27 of Ukrainian Col. Oleksandr Oksanchenko was shot down by an S-400 over Kyiv. On 14 April 2022, the Russian Defence Ministry stated a Ukrainian Mi-8 was shot down by a S-400 near Horodnia, Chernihiv Oblast on its way to an air base following an attack on Russian territory near Klimovo, Bryansk Oblast. On 15 October 2022, a S-400 missile crashed or was shot down in the Grayvoronsky District of Belgorod Oblast, Russia. Belarus In 2011 State Secretary of the Union State of Russia and Belarus Pavel Borodin stated that Russia will supply the S-400 air defense system to Belarus. On 1 December 2021 Belarus President Alexander Lukashenko, in response to a reporter's question, replied that a Belarusian training center already has S-400 systems. The president said: “Yes. We train our guys in this training center. I'd like to ask the president [of Russia] to leave this system here.” In May 2022 Lukashenko further announced the country bought an undisclosed number of S-400 air defense missile systems. China In March 2014, it was announced that Russian President Vladimir Putin had given authorization to sell the S-400 system to China. On 13 April 2015, the chief executive of the Russian state-run arms trader Rosoboronexport confirmed that China secured a contract for the purchase of the S-400 air defense system. Delivery of the system began in January 2018. China test fired Russian S-400 systems for the first time in early August 2018. Deliveries were reportedly postponed after the delivery of two S-400 units. The acquisition of S-400, reported to initially consist of six batteries, improves China's air space defense. A reported coverage range would allow China's defense of the Taiwan Straits and the Diaoyu Islands. Taiwan plans countermeasures using signals intelligence units to locate and destroy S-400 systems before they can be used. Turkey In late 2017 Turkish and Russian officials signed a US$2.5 billion agreement for delivery of the S-400 air defense system to Turkey. The US Secretary of State raised concerns over the deal, which were rebuffed by President Erdogan and other Turkish officials, citing the US refusal to sell the upgraded MIM-104 Patriot to Turkey. Turkey received its first installment of the Russian S-400 missile defense system on 12 July 2019. On