The Turkish crackdown has primarily targeted large American aid agencies, including Mercy Corps and the International Medical Corps, which were expelled from the country in March and April, respectively. But Turkish authorities have more recently ratcheted up pressure on Syrian aid workers, who have faced lengthy detentions and the threat of deportation to foreign countries, including Sudan, which accepts Syrians without visas. The situation for many relief agencies has become so grave that they are being forced to relocate their operations to Amman, Jordan, or northern Iraq. The crackdown has its roots in the July 2016 coup attempt against President Recep Tayyip Erdogan, who has responded by firing government officials, shutting down independent newspapers, and imposing ever steeper restrictions on local and international nonprofits. More information is available here.
Source: Foreign Policy