[Gambar]: Pembunuhan Kejam Beramai-Ramai Puak Syiah Di Iraq

The United States has condemned a "horrifying" massacre by militants said to have killed hundreds of Iraqi Shia air force recruits in the northern city of Tikrit, urging the country to unite.

Fighters from the Islamic State of Iraq and the Levant (ISIL) have overrun a successionof major towns and cities in the north of Iraq over the last week and are closing on Baghdad.

On Friday, tweets attributed to ISIL claimed the militants had killed 1,700 Shia soldiers as they advanced toward the capital, a figure that has not been independently verified.