US issues 'heightened threat' alert after transition BBC News 3 years ago Security chiefs warn of “individuals frustrated with the exercise of governmental authority”. Donation Help Support the Work of WNews Donate ADVERTISEMENT ADVERTISEMENTThis story is from The BBC News. To read the full story, please go to https://www.bbc.co.uk/news/world-us-canada-55833992.This post was originally published on this site