Article 5
Should the unthinkable happen and any NATO member felt the need to invoke article 5 I have no doubt whatsoever that the response from NATO would be unanimous. The US is obviously the pivotal member state but there’s absolutely no reason to suppose that they would renege on their responsibilities, regardless of the occupant of 1600 Pennsylvania Avenue. Even more so given the response to the 9/11 invocation of the article by the US from their allies. I, for one, am exceedingly proud of our (UK) steadfast support (rightly or wrongly) to our closest ally.