Israel attacked what it said was a Hamas base hidden in a Gaza camp for displaced Palestinians, an incident likely to stoke international concern for civilians caught up in the almost year-long war.

U.S. officials have told The Wall Street Journal that the Gaza ceasefire and hostage release deal between Israel and Hamas won't materialize until Joe Biden's term in office (Nov). The officials cited two big obstacles in the deal to be signed this year.

Daily exchanges of fire between Hezbollah and Israel have been destructive, disruptive and sometimes deadly. An escalation could risk starting a wider regional conflict.