India's Covaxin trials begin at AIIMS; India crosses 13 lakh Coronavirus cases; No flights in Kolkata on July 25 and 29; Ashok Gehlot demands that Governor call Assembly session; Sonia Gandhi praises Narasimha Rao in birth centenary year; Former RBI Governor Urjit Patel speaks on rift with Centre; Istanbul's iconic Hagia Sophia opens as a mosque and more news
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