Australia raises threat level to high on iraq syria
Washington investigating alleged ISIS chemical attack
Kurds battling Islamic State militants fear the group may have used an unidentified chemical weapon.
Turkish and US officials said IS were on the verge of taking Kobani from its outgunned Kurdish defenders.
The fighters seized more than a third of the Syrian border town of Kobani, a monitoring group said.
Calls for support are coming from the increasingly besieged Iraqi capital.
Islamic State fighters were undeterred by US-led air strikes, hitting the Syrian Kurdish town with shell fire.
US-led air strikes in eastern Syria killed 14 Islamic State fighters.
An unspecified number of planes may take part in air strikes against insurgent targets.
US raised the possibility its troops might need to take on a larger role in Iraq’s ground war against ISIS.
Francois Hollande called for united international action to tackle the threat from Islamic State militants.
Oz is concerned over the number of its citizens believed to be fighting with Islamist militant groups.