U.S. President Barack Obama is sending Special Forces. British jets have joined French warplanes over the skies of Syria. Even Germany, whose post-World War II constitution puts restrictions on fighting battles on foreign soil, is becoming increasingly involved.
But as the West steps up its war against ISIS, it appears that the involvement of the U.S.-led coalition's Arab members - all of them much closer geographically to the terror group than their Western partners - is drawing down.
Saudi Arabia and the United Arab Emirates are down to about one mission against ISIS targets each month, a U.S. official told CNN on Monday. Bahrain stopped in the autumn, the official says, and Jordan stopped in August. CNN contacted all of these countries for comment and is yet to receive a response.
Why aren't Arab countries more involved in the fight against ISIS?