[Radio Dabanga] Washington -- An eminent group of US and international organisations and prominent individuals involved with the cause for Sudan's democratic transformation, have addressed a joint open letter to US President Joe Biden, and Secretary of State Antony Blinken, in anticipation of today's Marches of the Millions, to mark the third anniversary of the revolution that overthrew the 30-year Al Bashir dictatorship in 2019, asserting that "the USA has a critical role to play in supporting the aspirations of the Sudanese people".