MOSCOW (Reuters) -- Russia’s former president and an ally of President Vladimir Putin said in remarks published on Monday that the West’s continued supply of arms to Kyiv risked a global nuclear catastrophe, reiterating his threat of nuclear war over Ukraine. “Of course, the pumping in of weapons can continue .... and prevent any possibility of reviving negotiations,” Medvedev said in remarks published in the daily Izvestia. “Our enemies are doing just that, not wanting to understand that their goals will certainly lead to a total fiasco. Loss for everyone. A collapse. Apocalypse. Where you forget for centuries about your former life, until the rubble ceases to emit radiation.”