'Closer to the bullseye': How damning is Michael Flynn's guilty plea for Trump?

This week former US national security advisor Michael Flynn pleaded guilty to lying to the FBI, about conversations with the Russian ambassador to the US. Just how significant is the guilty plea from the former US national security adviser, and what could it mean for the Trump administration?

Embattled National Security Advisor Michael Flynn (C) flanked by Kellyanne Conway (L) and Jared Kushner (R) attends a press conference Source: EPA