The rankings were prepared after examining the volume of terrorist and rebel alerts, messaging traffic, videos, photos, incidents and the number of killed and injured in a country over the past 30 days.
The unilateral pressure by US administration on India, at the behest of US Business Associations lobby through US International Trade Commission investigations and request to USTR to enlist India under Priority Foreign Country under Special 301 review, lacks legitimacy under WTO framework, the signatories to the letter said.
Images of the events that shaped the world in March.
Read the full transcript of President Obama's State of the Union address on Wednesday at the US Capitol in Washington.