Shashi Tharoor has said "sorry" after he tweeted about PM Narendra Modi's speech in Bangladesh. "PM is giving Bangladesh a taste of Indian 'fake news'," he had tweeted. "Yesterday, on the basis of...quick reading of headlines...I tweeted "everyone knows who liberated Bangladesh," implying that PM Modi had omitted to acknowledge Indira Gandhi. It turns out he did," Tharoor tweeted.