"President Donald J Trump will address our nation's troops and the American people tomorrow night at 9:00 pm (EDT) from Fort Myer in Arlington, VA, to provide an update on the path forward for America's engagement in Afghanistan and South Asia," White House Press Secretary Sarah Sanders said in a statement.
The much-awaited policy announcement comes eight months after he became the US President.
Last week, Defense Secretary Jim Mattis had said that Trump administration has almost reached a decision on a new approach for fighting the 16-year-old war in Afghanistan.
Months ago the Pentagon had settled on a plan to send approximately 3,800 additional troops to help strengthen the Afghan army, which is stuck in what some call a deteriorating stalemate with the Taliban insurgency.
Afghanistan has been battling insurgency for more than a decade. The Taliban offensive against the west-backed government in the country increased this summer.