paul chadurgion, al jazeera.n northern syria, a new alliance has been formed to confront isil, the syrian democratic forces are backed by the united states and include kurdish forces. but other opposition groups are concerned the partnership will give the kurds too much power as zeina hodr explains. >> reporter: americas partners on the ground, the start of an offensive it hopes will end isil's presence in the northeastern part of the country. this newly formed alliance includes kurdish, arab and assyrian forces, also expected to receive the help of u.s. special forces which the obama administration plans to help in the fight against isil. many groups are participating in this effort with coordination and support of the u.s.-led coalition. >> u.s. backing for the syrian kurdish force is not new. so-called people's protection units have cleared many areas of isil with the help of coalition airstrikes in recent months. it has been trying to recruit more groups from syria's arab majority to create what kurdish leade