Use of a grand jury to investigate links between Trump’s presidential team and Russia could be very serious. Here’s what you need to know about grand juries
It has emerged that US special counsel Robert Mueller is using a grand jury in Washington as part of an investigation into potential coordination or collusion between Donald Trump’s presidential campaign and Russia. But what is a grand jury, how does it work and what does Trump have to fear?
Link : What is a grand jury and how serious is it for Donald Trump?