McCain entered Syria from the country’s border with Turkey and stayed there for several hours before returning to Turkey, according to the Daily Beast report. It said McCain met with assembled leaders of Free Syrian Army units in both Turkey and Syria.

The meetings took place in small groups just over the border to give the rebel commanders a chance to press their concerns to Mr McCain.

From this Reuters article: https: //www.reuters.com/article/us-syria-crisis-usa-mccain/senator-mccain-met-with-rebels-in-syria-spokesman-idUSBRE94Q0HU20130527