US troops in north-eastern Syria were attacked by a drone, a US official told Reuters on Friday, although there were no injuries according to initial reports. This is thesecond attack in recent days against US forces in the Middle East as the region braces for a possible new wave of attacks by Iran and its allies. Ismail Haniyeh, the political leader of Iran-backed Hamas, was assassinated in the Iranian capital Tehran on July 31, an attack that drew threats of revenge by Iran against Israel, which is fighting the Palestinian Islamist group in Gaza. Iran blamed Israel for the killing. Israel ha…