Reports by the Congressional Research Service from 2008 discuss emerging policy issues regarding carbon dioxide pipelines for carbon sequestration, network needs and cost uncertainties regarding pipelines for carbon dioxide control, and jurisdictional issues in regulating carbon dioxide sequestration pipelines.
Total numbers of speakers is high: over 40 million Farsi speakers (about 60% of Iran's population); over 14 million Dari Persian speakers in Afghanistan (50% of the population according to CIA World FactBook & Britannica); and about 2 million Dari Persian speakers in Pakistan.
Although only about 11% of population in India speak English, yet it has got the second rank by virtue of its huge population share. In India the number of people speaking English is 125,226,449. Coming at the third spot is Pakistan which has 99,690,000 English speakers. At the fourth spot is Nigeria.