Quadrilateral Traffic in Transit Agreement
The Quadrilateral Traffic in Transit Agreement (QTTA) (Urdu: معاہدہِ چار طرفہ ٹریفک گذرگاہ) is a transit trade deal between China, Pakistan, Kyrgyzstan and Kazakhstan for facilitating transit traffic and trade. In February 2017, Tajikistan expressed interest in joining the deal.
Source: Wikipedia — Quadrilateral Traffic in Transit Agreement (CC BY-SA 4.0)