President of Oxford Union, APS survivor Ahmed Nawaz announced on Twitter on Friday. He will be joining other speakers, including education activist Malala Yousafzai.
The video garnered mixed responses on social media. Some praised Imran Khan for his commitment to his faith while others condemned him for using religion for his political mileage.
On Thursday in Kabul, women in headscarves carried banners that read: "Iran has risen, now it's our turn!" and "From Kabul to Iran, say no to dictatorship!"
Chauhan, described as a "China expert" by local media, had been serving as counsel to India's national security adviser after his retirement from active service last year.