It's been 5 years since MH17 was shot down, killing 298 people. Here's what happened, and why nobody has yet been held officially responsible

It's been 5 years since MH17 was shot down, killing 298 people. Here's what happened, and why nobody has yet been held officially responsible
Malaysia Airlines Flight MH17 was shot out of the sky over Eastern Ukraine in July 2014....
Sinéad Baker, Business Insider US