TO PRACTISE, visit UPGRADE ENGLISH, Reading Comprehension
READ IN ENGLISH!
The press
https://www.independent.co.uk/ https://www.irishtimes.com/ http://www.guardian.co.uk/
https://www.economist.com/ https://www.heraldscotland.com/ https://www.indiatoday.in/ https://www.newyorker.com/ https://www.sowetanlive.co.za/ https://www.washingtonpost.com/
Access to these references is not always free, but you can most often access part of the articles, create a free account or of course use Europresse.
Travailler la compréhension écrite:
http://www.onestopenglish.com/skills/news-lessons/monthly-topical-news-lessons/
Books
Why not read a book in English? If it is the first time you are trying, I would recommend a novel you have already read in French (and which you like!), or a book on a topic you know about already. The library at Sciences Po also offers you access to many e-books through ‘Ressources Numériques’ as for example Jstor, Cambridge University Press or Oxford Handbooks.
Khan academy. Reading comprehension and critical analysis.
https://www.khanacademy.org/test-prep/mcat/critical-analysis-and-reasoning-skills-practice-questions
The first 9 units are instructions, explanations and tutorials to work on your reading comprehension and critical analysis skills.
The next units are practice.
Khan academy. US politics:
https://www.khanacademy.org/humanities/us-government-and-civics (B1-B2 level)
https://www.khanacademy.org/humanities/ap-us-government-and-politics (B2 level)