US expected to shrink troops available to NATO for wars and crises

The Trump administration is expected to cut the number of troops available to NATO for fighting wars and responding to major crises - known as the NATO force model.The announcement is expected to be made at a meeting of NATO defence policy chiefs in Brussels later today - according to the news agency Reuters.It comes after the Pentagon abruptly cancelled the deployment of 4,000 soldiers to Poland earlier this week - reportedly blindsiding officials in Warsaw.The Trump administration also ordered the withdrawal of 5,000 troops from Germany earlier this month.So what does it mean for the NATO alliance - and will the US eventually abandon it altogether?GUEST: Douglas Lute, former US ambassador to NATO from 2013-2017PRODUCER: Pip Cook