Video: Gaza hit by series of blasts as Israeli ground troops mass along border Israeli reserve soldiers started gathering on Saturday morning, before heading to the border after Israel's Cabinet authorised the mobilisation of up to 75,000 reservists, preparing the ground for a possible invasion into Gaza. Israel unleashed a massive air campaign on Wednesday, killing a leading militant of the Hamas Islamist group that controls Gaza and rejects Israel's existence, with the declared goal of deterring gunmen in the coastal enclave from launching rockets that have plagued its southern communities for years. An air raid targeted a building in Gaza City that holds the offices of local Arab media, wounding three journalists from al Quds television, a station Israel sees as pro-Hamas, witnesses said. Forty-eight Palestinians, about half of them civilians, including 13 children, have been killed in Israel's raids, Palestinian officials said. More than 500 rockets fired from Gaza have hit Israel, killing three people and injuring dozens.