https://www.kommersant.ru/doc/3585474
https://ru.krymr.com/a/29114846.html
https://www.iiss.org/en/regions/russia/60-2-03-tertrais-cm-3377
The quotation in the title comes from the Russian Foreign Ministry, brushing off UK demands for an explanation of why Russia poisoned Sergei Skripal. That the Russians said this is a good sign that they have not entirely forgotten the risks of attacking the United States.
http://www.ng.ru/week/2018-03-18/7_7192_world.html
https://www.gazeta.ru/army/2018/03/17/11686969.shtml
https://www.kommersant.ru/doc/3571779
In a March 1 address to the nation, Russian President Vladimir Putin evoked Soviet-era exaggeration, proclaiming barely feasible economic and social goals and boasting of nuclear arms that are unlikely to change the strategic balance. Continued exaggeration could sap public confidence in the legitimacy of Russia's ruling system and leaders.
https://www.rand.org/blog/2018/03/putins-boasting-about-nuclear-weapons-wont-help-him.html
http://www.globalaffairs.ru/redcol/Nazad-k-balansu-19421
http://www.kasparov.ru/material.php?id=5AA9784E2F99D