In September, 2007, Israel bombed a Syrian military facility it claimed was producing a nuclear weapon of some sort. Syria, which is a signatory of the nuclear proliferation treaty (Israel is not) denied the claim. The site was investigated by the International Atomic Energy Agency, which found traces of uranium, but declined to suggest that indicated a nuclear weapons program. Another possibility raised was that the uranium present was introduced by the weapons used by the Israelis to bomb the facility. (Recent news)
According to the BBC, Israel is known to have depleted uranium weapons, but Israel claims that it doesn’t use them. Others disagree. In 2005/2006 Israel acquired depleted uranium GBU-28 ‘bunker busting’ bombs from the US (the first sale of these outside the US) which were used against Hezbollah in Lebanon. It has been stated that the original purpose of the sale was to give the Israelis the means to attack Iran’s nuclear fuel processing facilities. (reference) In September, 2008, the Bush administration approved the sale of 1,000 more ‘bunker buster’s’ to Israel. Some argue that this was a precondition for Israel attacking Iran’s nuclear fuel processing facility.
Since Canadian depleted uranium is intermingled with uranium from other sources in the US, it is a certainty that some Canadian depleted uranium has been used in the Israeli weapons.