As per information given by the World Trade Organisation (WTO) there are 420 regional trade agreements in force across the globe. Transatlantic Trade and Investment Partnership (TTIP) and Trans-Pacific Partnership (TPP) are the sort of mega regional trade deals. You can read about the WTO – World Trade Organization – History, Functions, Conferences, Dispute Settlement in the given link.

The TPP already covers 40% of global GDP, and trade between member nations. Once fully ratified, the Trans-Pacific Partnership is set to become the world’s largest trade agreement.

Further readings:

1. India and the WTO – An Overview of Latest Developments
2. India – US Trade Relations: RSTV – Big Picture Analysis for UPSC IAS exam