Israel's pilots train in Turkish airspace. Its companies are upgrading Turkish F-4 fighters with fancy electronic gear. Turkey and Israel also share intelligence on security threats. Turkish and Israeli agents reportedly man joint listening posts on the Iranian, Iraqi, and Syrian borders. The alliance buys Turkey lots of good things.
Turkey now gets high-end U.S. weapons from Israel.
Israel's advocates in Washington also help. Israel, obviously, gets something too. Its relationship with Muslim Turkey eases its isolation in the Middle East. All this camaraderie gives Syria, Iraq, and Iran fits, of course. Syria fears encirclement and charges Turkey with building an anti-Arab alliance.