two British made "Chieftain" MBTs were brought to Israel for a 4 years long evaluation for service with the IDF. The plan was for the IDF not only to purchase the British MBTs, but for IMI (Israeli Military Industries) to buy production rights. As part of the deal during the early 60's Israel purchased second hand "Centurion" MBTs from the British, that used that money in the "Chieftain" development. After the trials were done Israeli improvement and ideas were implemented by the British manufacturer, but British politicians canceled the agreement with Israel and the program was shut down. The knowledge earned during the improvements on the "Chieftain", together with earlier experiments in tank improvements, gave the last push for the development and production of the "Merkava" tank. United Kingdom has supplied equipment and spare parts for Sa'ar 4.5-class missile boats and F-4 Phantom fighter-bombers, components for small-caliber artillery ammunition and air-to-surface missiles, and engines for Elbit Hermes 450 Unmanned aerial vehicles. British arms sales to Israel mainly consist of light weaponry, and ammunition and components for helicopters, tanks, armored personnel carriers, and combat aircraft. Russia On 19 October 1999, Defense Minister of China, General Chi Haotian, after meeting with Syrian Defense Minister Mustafa Tlass in Damascus, Syria, to discuss expanding military ties between Syria and China, then flew directly to Israel and met with Ehud Barak, the then Prime Minister and Defense Minister of Israel where they discussed military relations. Among the military arrangements was a $1 billion Israeli Russian sale of military aircraft to China, which were to be jointly produced by Russia and Israel. Russia has bought drones from Israel. China Israel is the second-largest foreign supplier of arms to the People's Republic of China, only after the Russian Federation. China has purchased a wide array of military hardware from Israel, including Unmanned aerial vehicles and communications satellites. China has become an extensive market for Israel's military industries and arms manufacturers, and trade with Israel has allowed it to obtain "dual-use" technology which the United States and European Union were reluctant to provide. In 2010 Yair Golan, head of IDF Home Front Command visited China to strengthen military ties. In 2012, IDF Chief of Staff Benny Gantz visited China for high-level talks with the Chinese defense establishment. Cyprus As closely neighboring countries, Israel and Cyprus have enjoyed greatly improving diplomatic relations since 2010. During the Mount Carmel Forest