Palestinian armed groups have used a new type of bomb in their fight against Israel.<br /><br />Two barrels with explosives that washed up on Israeli coasts earlier this week - but were defused safely - are being called "floating bombs". <br /><br />A number of Palestinian armed factions say their motive for the bomb attempt was to avenge an Israeli raid in the West Bank last month that killed 3 Fatah members.<br /><br />Israel says it's taking the threat seriously.<br /><br />From Gaza, Al Jazeera's Ayman Mohyeldin reports.<br /><br />[February 4, 2010]
