It has been a good week for Vladimir Putin. On Thursday, a Russian missile hit a cafe in eastern Ukraine, killing more than 50 people, including a six-year-old boy. On Monday, the Russian-leaning Robert Fico was elected prime minister of Slovakia, pledging to cut military supplies to Ukraine. In America, Republicans and Democrats are having fisticuffs over funding for Ukraine, a previously bipartisan issue becoming ever more polarised. Meanwhile, the EU admits it can’t match US levels of support. With every atrocity that goes unpunished, Russia’s aim of furthering an age of utter impunity, where dictators can slaughter civilians and…