The UN's mine disposal agency says about 40% of the cluster bombs fired or dropped by Israel failed to detonate - three times the UN's previous estimate.
It says the problem could delay the return home of about 200,000 displaced people by up to two years.
The devices have killed 14 people in south Lebanon since the August truce.
The manager of the UN's mine removal centre in south Lebanon, Chris Clark, said Israel had failed to provide useful information of its cluster bomb strikes, which could help with the clearance operation.
Last month, the UN's humanitarian chief, Jan Egeland, accused Israel of "completely immoral" use of cluster bombs in the conflict.
Israel has insisted that the munitions it uses in conflict comply with international law. Story from BBC NEWS: http://news.bbc.co.uk/go/pr/fr/-/2/hi/middle_east/5382192.stm
Published: 2006/09/26 14:55:20 GMT
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