Ukraine's SBU secret police had found that 12 Kh-55s were illegally exported in 1999-2001. He said six of the air-to-ground cruise missiles were sold to Iran, and six to China.
The Kh-55 - which the US calls the AS-15 - has a highly accurate guidance system and a range of up to 3,000km, which would put Israel in striking distance of Iran. The missile was part of the Soviet bomber fleet weaponry left behind in Ukraine.
Just one more reason for Israel to nuke Iran...
...bet it starts World War 3 if they do.