So now the "insurgents" are using ultra-low-tech methods to attack high-value targets (HVT's) in Iraq

Faced with an American military crackdown using all the paraphernalia of high-technology warfare, Iraqi insurgents resorted today to the humblest of creatures and the simplest of transports to carry out what American officers called "spectacular" strikes against heavily fortified targets in Baghdad.
...
American commanders said they had no immediate suspects in the attacks. The donkey carts themselves yielded few clues, beyond the sort of hand-lettered inscriptions that Middle Eastern carters commonly inscribe on their vehicles. "Allah, Muhammad, Ali," one said, invoking the Shiite Muslim trinity of God, the Prophet Muhammad and the Shiites' first imam, Ali.
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The donkeys were tethered to trees, with the rockets inserted inside home-made launchers linked to car batteries and time-fuses, and hidden under hay. But these "contraptions," as one American officer called them, were armed with powerful battlefield rockets. Several feet long and as big around as a fire hose, they were said by American officers to have been either Soviet-made 107-millimeter or Brazilian-made 122-millimeter rockets, two types that were stockpiled by Mr. Hussein's army before the American invasion. They have a range of up to 10 miles.

Former US Senator from Georgia, Max Cleland said this not too long ago

Welcome to Vietnam, Mr. President. Sorry you didn't go when you had the chance