Fire, Cyprus dispatched two aviation assets to assist fire-fighting operations in Israel – the first time Cypriot Government aircraft were permitted to operate from Israeli airfields in a non-civil capacity. In addition, Israel and Cyprus have closely cooperated in maritime activities relating to Gaza, since 2010, and have reportedly begun an extensive sharing program of regional intelligence to support mutual security concerns. On 17 May 2012, it was widely reported that the Israeli Air Force had been granted unrestricted access to the Nicosia Flight Information Region of Cyprus, and that Israeli aviation assets may have operated over the island itself. Cyprus, as a former S-300 air-defense system operator, was speculated by Greek media to have assisted Israel in strategic planning to challenge such air-defense systems, alongside shorter-range SAM systems, although this remains unconfirmed. Greece Israel and Greece have enjoyed a very cordial military relationship since 2008, including military drills ranging from Israel to the island of Crete. Drills include air-to-air long-distance refueling, long-range flights, and most importantly aiding Israel in outmaneuvering the S-300 which Greece has. Recent purchases include 100 million euro deal between Greece and Israel for the purchase of SPICE 1000 and SPICE 2000 pound bomb kits. They have also signed many defense agreements, including Cyprus, in order to establish stability for transporting gas from Israel-Cyprus to Greece and on to the European Union-a paramount objective to the future stability and prosperity of all three countries, threatened by Turkey. Turkey Israel has provided extensive military assistance to Turkey. Israel sold Turkey IAI Heron Unmanned aerial vehicles, and modernized Turkey's F-4 Phantom and Northrop F-5 aircraft at the cost of $900 million. Turkey's main battle tank is the Israeli-made Sabra tank, of which Turkey has 170. Israel later upgraded them for $500 million. Israel has also supplied Turkey with Israeli-made missiles, and the two nations have engaged in naval cooperation. Turkey allowed Israeli pilots to practice long-range flying over mountainous terrain in Turkey's Konya firing range, while Israel trains Turkish pilots at Israel's computerized firing range at Nevatim Airbase. Until 2009, the Turkish military was one of Israel's largest defense customers. Israel defense companies have sold unmanned aerial vehicles and long-range targeting pods. However, relations have been strained in recent times. In the last two years, the Turkish military has declined to participate in the annual joint naval exercise with Israel and the United States. The exercise, known as