The Network for International Friendship issued a statement to condemn the KDP for preventing the first international working delegation to enter Rojava.
The statement said: "We condemn the KDP which prefers collaboration with Turkey instead of serving its own people. We stand in solidarity with the Kurdish people who stand up and struggle for their basic rights in all four parts of Kurdistan."
The delegation was prevented by Barzani's party from crossing the border into Rojava on Monday.
The statement called on "everybody to participate in the next International Working Brigade to take place in July."
The brigade consisted of a few dozen internationalist volunteers from Europe and North America who were invited by the Network for International Friendship to travel to Rojava. The plan was to spend three weeks getting to know meaningful places in Rojava, attending workshops and working in cooperatives. The initiative was set to put solidarity into practice and break the economic and political embargo against Rojava.