Russian President Vladimir Putin.The former head of the British Army has insisted the war in Ukraine has been a “disaster for Russia”.Admiral Sir Tony Radakin, who was chief of the defence staff until this week, said Vladimir Putin’s progress since the 2022 invasion had been slower than a snail’s.His comments came a day after Keir Starmer warned Donald Trump that the Russian president “could not be trusted” as attempts to end the conflict drag on.Speaking on Radio 4′s Today programme this morning, Sir Tony listed the reasons why Putin’s decision to invade his neighbour had backfired.He said: “This war has been a disaster for Russia. Putin wanted less Nato, he’s got more Nato. We’ve grown from 30 nations to 32 nations.“Putin originally thought that he would subjugate Ukraine in days, if not weeks. That’s clearly not the case.“It’s a facile description but it’s a really important one. If a snail had left Rostov-on-Don in Russia on Febru