i couldn't find any subverses on this topic so decided to start it myself, hope it's useful for the big picture about our main subject. for the moment i just share some mainstream articles, haven't been lucky yet to find additional sources from alternative/independent media:

http://www.washingtontimes.com/news/2016/jan/22/alexander-litvinenko-slain-ex-kgb-spy-accused-puti/

http://www.mirror.co.uk/news/uk-news/alexander-litvinenko-putin-video-paedophile-7223902

http://www.thedailybeast.com/articles/2016/01/21/alexander-litvinenko-was-killed-killed-for-calling-putin-a-pedophile.html

http://www.dailymail.co.uk/news/article-3412134/I-wasn-t-ticklish-felt-good-boy-five-described-tummy-kiss-sparked-Putin-paedophile-claims-Russian-president-said-wanted-stroke-like-kitten.html

http://www.dailymail.co.uk/news/article-2936331/Alexander-Litvinenko-inquiry-Spy-s-father-cut-ties-family.html

community: please let me know if you think it's worth following down this path!