The London-based rights group documents evidence, including statements by the Israeli army, showing that the attacks on buildings were "a collective punishment against the people of Gaza".
Luke Somers, a 33-year old journalist, appears at the end of a video released by al-Qaeda in the Arabian Peninsula, saying that his "life is in danger".
French politicians have voted in favour of calling on the government to recognise Palestine, in a symbolic move that demonstrates growing European impatience with a stalled peace process.
Security and military sources have said that the wife of Abu Bakr al-Baghdadi, the leader of the Islamic State group, was detained in Lebanon 10 days ago, along with their son.
Hundreds of angry protesters converged on Tahrir Square in Cairo Saturday after a court dismissed a murder charge against ousted president Hosni Mubarak over the deaths of protesters in 2011.
7 Yemenis and one foreigner freed by special forces in Yemen: US official denies foreigner is American, contradicting earlier claims by a Yemeni government official.
Ban Ki-moon urges Israeli and Palestinian representatives to return to the negotiation table, while EU countries continue to mount pressure on Israel over statehood recognition for Palestine.