cluster bombs

[Dave Markland]

Ramsey Lewis noted in "The fire this time" that cluster bombs are "illegal
under international law".  Though the book reprints many passages from
various int'l law documents, he fails both to expand on the point (which, if
true would add more war crimes to those committed by Canada in the Gulf War,
by the by) and doesn't append a relevant document in the book.

Can anyone confirm or deny his assertion?

Regards,
Dave Markland
Vancouver