美国联军对叙利亚伊斯兰武装展开空袭
The US-led coalition has carried out its most sustained air attacks so far on Islamic State fighters attacking the Turkey-Syria border town of Kobane.
美国领导的联军对攻击土耳其叙利亚边境Kobane镇的伊斯兰国武装分子展开迄今最持久的空袭。
Syrian Kurdish fighters said the strikes were the most effective yet but should have come much earlier.
Correspondents said the surge of IS appeared to have been halted, although fighting around Kobane continues.
At least 12 people were killed in protests by Kurds in Turkey about the lack of Turkish military support.
Kurdish Syrian Party leader Salih Muslim said the situation overnight remained very serious with the Kurdish fighters of the YPG militia under intense pressure.
"There is heavy fighting going on by YPG forces and they're trying to defend the civilians," he said.
"There is a very large operation against them."
At least 400 people have died in three weeks of fighting for Kobane, monitors say, and 160,000 Syrians have fled across the border to Turkey.
'More robust'
The latest media release from the US military confirmed five air strikes around Kobane, saying they were on Monday and Tuesday, but without specifying exactly when.
The strikes take place as the Obama administration is reported to be increasingly frustrated by what it sees as Turkey's excuses for not doing more to intervene militarily.
"There's growing angst about Turkey dragging its feet to act to prevent a massacre less than a mile from its border," a senior administration official was quoted by the New York Times as saying.