https://www.rbc.ru/newspaper/2018/12/14/5c127c2e9a7947804f8a311d
https://www.gazeta.ru/army/2018/12/13/12093475.shtml
https://www.gazeta.ru/army/2018/12/12/12092173.shtml
https://www.gazeta.ru/army/2018/12/12/12093085.shtml
https://www.gazeta.ru/army/2018/12/12/12092881.shtml
Is US Army Artillery progressing toward being able to outrange and outgun Russian and Chinese weapons
https://www.gazeta.ru/army/2018/12/11/12091447.shtml
http://www.ng.ru/politics/2018-12-11/1_7460_cariby.html
https://carnegie.ru/commentary/77925
http://www.ng.ru/politics/2018-12-11/100_ER111218.html