U.S. Air Force Maj. Gena Fedoruk and 1st Lt. Marcel Trott take off in a KC-135 Stratotanker from a base in the U.S. Central Command area of responsibility to support airstrikes in Syria, Sept. 23, 2014.

U.S. Air Force Maj. Gena Fedoruk and 1st Lt. Marcel Trott take off in a KC-135 Stratotanker from a base in the U.S. Central Command area of responsibility to support airstrikes in Syria, Sept. 23, 2014. (Matthew Bruch/U.S. Air Force)

WASHINGTON — The U.S. effort to build a coalition against Islamic State extremists has gained traction, with a growing number of countries joining a fight that President Barack Obama has said is “not America’s fight alone.”

Most of the commitments have been for operations against the Islamic State in Iraq rather than Syria, where airstrikes have so far been carried out only by U.S. and Arab forces.

Here is a list of some of the countries that have pledged help:

BRITAIN: The British Parliament on Friday approved the government’s call for British aircraft to take part in airstrikes against Islamic State targets in Iraq. The vote was 524-43. Prime Minister David Cameron says he sees no legal barrier to joining attacks in Syria but agreed to limit British participation to Iraq because of Labour Party opposition. Cameron sought Parliament’s approval after last year’s humiliating defeat when Parliament rejected airstrikes against Syrian government forces. The vote undermined Obama's efforts to win support for air attacks after Syria’s use of chemical weapons, which the president called off at the last minute.

AUSTRALIA: The Australians have agreed to send up to eight F/A-18 combat aircraft along with an early warning and control plane and a KC-30A tanker and transport aircraft for operations over Iraq. Australia is also willing to send military advisers.

FRANCE: Although the French strongly opposed the 2003 invasion of Iraq, they have already joined the fight against the Islamic State. French jets are flying recon missions over Iraqi territory and took part in recent attacks that broke the Islamic State siege of the Iraqi town of Amerli. France has also provided ammunition to Iraqi forces and have assured Iraq’s new prime minister that French forces will participate “in efforts to hit terrorist locations” in Iraq.

GERMANY: Although the Germans have refused to participate in airstrikes, they have pledged to help rearm and train Kurdish fighters and have banned Islamic State recruiting and displaying the extremist group’s symbols on German soil.

CANADA: Canada has agreed to provide equipment and ammunition to Iraqi forces and are sending about 50 military advisers to help train and mentor Iraq’s military.

NETHERLANDS: The Dutch government has agreed to send six F-16 aircraft to Iraq as well as provide about 380 military personnel to provide logistics and security support and train the Iraqi military.

BELGIUM: The Belgian Defense Ministry has announced plans to send six F-16s for combat sorties over Iraq as well as cargo aircraft. Parliament must agree to the plan but the government is confident it has broad support for approval.

DENMARK:Danish Prime Minister Helle Thorning-Schmidt said her government will send four operational planes and three reserve jets along with 250 pilots and support staff to join the fight against the Islamic State in Iraq. Danish lawmakers must approve the plan, but that is considered a formality.

ARAB COUNTRIES: Saudi Arabia, the United Arab Emirates. Jordan, Bahrain and Qatar have all contributed aircraft to missions over Syria. Fighter jets and drones from Saudi Arabia and the Emirates dropped bombs on Islamic State-controlled oil refineries in eastern Syria. The Saudis confirmed that their pilots taking part in the attacks was the son of the heir to the Saudi throne _ a sign of Riyadh’s commitment. Jordan confirmed its air force had “destroyed a number of targets” belonging to “terrorist groups that sought to commit terror acts inside Jordan” without referring specifically to Syria.

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