(FILES) In this file photo taken on April 24, 2020 Catholicos Garegin II, the head of the Armenian Apostolic Church, attends a ceremony commemorating the 105th anniversary of the massacre of 1.5 million of Armenians by Ottoman forces in 1915, at the Tsitsernakaberd memorial in Yerevan. US President Joe Biden is preparing to recognize the World War I-era killings of 1.5 million Armenians by the Ottoman Empire as genocide, US media said on April 21, 2021. / AFP / KAREN MINASYAN
Armenia has been waiting for the US to recognise the genocide for decades. AFP

Biden recognising Armenian genocide will rock US-Turkey relations