Rebels mostly centered around the Syrian Revolutionary Command Council are fighting the Syrian government led by Bashar Al-Assad. The main army in the SRCC is the Free Syrian Army. Bashar Al-Assad is supported by Arab nationalists, secularists, Ba'ath, Iran, Hezbollah, Iraq, Russia, and to a lesser extent, Belarus and North Korea. Now Russia is actively involved militarily to "fight ISIS" however, it's more likely they're just here to destroy the opposition and help strengthen Assad. ISIS is fighting both the rebels and the government in the hopes of creating a new Caliphate. Their war extends into Iraq, Afghanistan, and Nigeria. Meanwhile, they are also all fighting al-Nusra front, an Islamist group backed by al-Qaeda. The Kurds in the north are fighting everyone in an attempt to gain some sort of autonomy. They border Turkey who is fighting the Kurds in their own country, so now Turkey is now fighting against the Syrian Kurds to prevent their own Kurds from joining the Syrian Kurds in the fight for independence. Meanwhile, NATO has been supporting the Syrian opposition, however, they haven't taken an active stance in the fight. A coalition of Arab states have also declared their support for the opposition. This bloc is primarily backed by Saudi Arabia, who is also fighting Iranian backed rebels in Yemen. The Brits meanwhile are silently watching the events from Cyprus, sipping their tea. And the Americans have been fighting themselves on weather or not they should join the fight militarily against ISIS. Hezbollah has been operating outside of Lebanon and has captured some of its own territory. The rebels in Yemen, the Houthis, have joined the fight on the side of the government. And Israel has been carefully watching, waiting, it's nuclear weapons ready to strike at any moment peaceful forces ready to help the poor people at any moment. And the fifth army has still yet to show up in the battle for the Misty Mountain and the Dwarvan treasure.