Kurdish-led forces in Syria seized a town from Islamic State on Tuesday after capturing a military base overnight, aided by US-led air strikes in some of the most dramatic gains yet against the militants.
The Kurdish march deep into the heart of Islamic State territory follows their capture of a town on the Turkish border last week, reversing the momentum of militants who had seized major towns in both Syria and Iraq last month.
The Kurdish YPG-led forces had taken full control of Ain Issa, said YPG spokesman Redur Xelil.
The Syrian Observatory for Human Rights, which reports on the war, said Islamic State fighters had completely withdrawn from the town.
Overnight, advancing forces including Syrian rebels fighting alongside the YPG took control of the nearby Liwa-93 military base, a strategic objective which Islamic State had captured last year from government forces.
‘Caliphate’
The advance to Ain Issa brings the Kurdish forces and their allies within 50km (30 miles) of Raqqa, Islamic State’s de facto capital, from which it rules over a “caliphate” across much of Syria and Iraq.
But Mr Xelil said an assault on the city was not currently planned. The Observatory said the aim of the advance was to seize control of an east-west highway running through Ain Issa which links the city of Aleppo with the northeastern province of Hasaka.
The US and its Arab and western allies launched an air campaign against Islamic State last year after the fighters, also known as Isis, Isil or Daesh, proclaimed their “caliphate” to rule over all Muslims.
Most credible ally
The YPG fighters have emerged as the most credible ally of the US-led campaign on the ground in Syria, where Washington has fewer friends than in Iraq. Mr Xelil described the US-led air support as "excellent".
Islamic State spokesman Abu Muhammad al-Adnani urged fighters to escalate attacks during the Muslim holy month of Ramadan and vowed to defeat the US-led campaign against them, promising “surprise after surprise” in coming days.
In a separate battle, the Syrian military and militias fighting alongside it have gained ground to the northwest of the city of Palmyra, which Islamic State captured from government control last month, according to the observatory and a source in Syria briefed on the situation.
The West and its Arab allies have shunned the idea of partnering with President Bashar al-Assad in the fight against Islamic State.
Reuters