Mohammad Enayah, an automotive engineer living in the Detroit suburbs, said he has lost nearly 100 relatives and friends in Gaza over the last year. He wonders if his home country the U.S. could have provided the weapons that killed them.

Israeli troops are now entering south-west Lebanon - until now, the invasion had focused on the eastern side of the border.

The fighting comes as the region awaits a potential Israeli counterstrike against Iran, which fired missiles at Israel last week and which backs both Hezbollah and Hamas.