Israeli PM Benjamin Netanyahu has vowed to "further intensify attacks on Hamas" in the Gaza Strip, following talks with his defence chiefs.
He said the Palestinian militants would "pay a heavy price" for their rocket attacks on Israel.
Israel's military said Hamas had fired 82 rockets at Israeli cities on Wednesday, after dozens of overnight air strikes in Gaza.
Some 50 Palestinians are reported to have died in the recent hostilities.
Israel says its targets have been militant fighters and facilities including rocket launchers, weapons stores, tunnels and command centres.
http://www.bbc.com/news/world-middle-east-28233135