Israeli Air Strike - Building Collapses After Missile attack

Building Collapses After Missile attack. Israel threatens Gaza with ground attack amid airstrikes. Gaza Attack Live: Israeli airstrike. The conflict between Israel and Hamas continues to escalate. Palestinian officials say at least 211 people have died in Israeli raids, including 10 killed. Israel says it is trying to minimize civilian casualties by issuing a variety of warnings - but how effective are they?