Rami Abdel Rahman News

The US-backed Syrian Democratic Forces, an alliance of Kurdish and Arab fighters, is battling to oust IS from their onetime stronghold of Raqa.

The strikes follow three days of suspected Russian raids in Deir Ezzor province that have killed dozens of civilians, according to the Observatory.

The Syria army operation in the area, backed by air support from ally Russia, is separate from the battle for provincial capital Raqa city.

More than 330,000 people have been killed and millions more displaced.

But IS fighters hit back with a counterattack that included several suicide bombings against the Syrian Democratic Forces, an alliance of Kurdish and Arab fighters trying to seize control of the city.

The strikes hit an IS jail in Mayadeen at dawn on Monday, killing 42 prisoners and 15 jihadists,

The coalition has backed the SDF's seven-month drive for Raqa with military advisers and weapons deliveries as well as air support.

On Friday, at least 80 relatives of IS fighters were killed in US-led coalition bombing of Mayadeen.

US-led air strikes on Syria killed a total of 225 civilians over the past month, a monitor said today, the highest 30-day toll since the campaign began in 2014.

Members of the Islamic State group have 'executed' 19 civilians including two children in a village held by anti-jihadists in eastern Syria.

The toll in Turkish air raids on Kurdish positions in northeastern Syria rose to 28 killed, a monitor said Wednesday.

Air strikes on a rebel-held village in northwest Syria on Tuesday killed 12 people and put a nearby field clinic out of service.

At least 42 people were killed and dozens more wounded in air strikes on a village mosque in northern Syria, the Syrian Observatory for Human Rights said.

Islamic State group fighters withdrew from much of the Syrian oasis city of Palmyra overnight, a monitor said today.

Suicide attacks on two security service bases in the heart of Syria`s government-held third city of Homs killed 42 people on Saturday.

Twin suicide attacks on security service bases in the heart of Syria`s government-held third city of Homs killed 14 people on Saturday

Turkey said today fewer than 100 Islamic State jihadists were still holed up in a flashpoint Syrian town which has seen the bloodiest clashes of Ankara's half-year campaign inside the conflict-torn country.

Despite condemnation from Washington and the UN, there was little sign that the government advance would be halted.

Shells fired by Syrian rebel groups killed at least 28 civilians in southwestern districts of the battleground city of Aleppo.

Syrian opposition fighters launched a major assault on government-held districts of Aleppo city on Monday after the regime severed their only remaining supply route into the city, an AFP correspondent said.