Storm Stella unleashes its fury on the north-eastern United States, archaeologists unearth two 19th-dynasty royal statues and the ongoing offensive in Mosul – the news of the week captured by the world’s best photojournalists

Main image: Forrest Bear Burns and Willow Burns huddle in their mother’s shawl before they join their father, who is playing the role of St Patrick, in the cross-community St Patrick’s Day parade in Downpatrick. Tradition holds that St Patrick and his companions landed at the mouth of the Slaney river, a few miles from Down Cathedral, in 432 AD. From here Patrick travelled extensively, spreading the teachings of Christianity before his death on 17 March 461 AD. He is buried at nearby Down Cathedral. Photograph: Charles McQuillan/Getty Images