ReutersIsraeli Prime Minister Benjamin Netanyahu says the strike which killed scores of displaced Palestinians in Rafah on Sunday was a “tragic mishap”, amid growing international condemnation of the blast.At least 45 people were killed according to the Hamas-run health ministry. Hundreds more were treated for severe burns, fractures and shrapnel wounds. Speaking in the Israeli parliament, Mr Netanyahu said it was vital that Israel took “every precaution possible” to protect civilians caught up in the fighting in Gaza.But he insisted the Israel Defense Forces (IDF) used their “best efforts…