Russia has to be prepared for a unified Western backlash should it go through with a feared attack on Ukraine, says US Vice President Kamala Harris. “Today the US and our allies and our partners are closer together. Today, we are clear in our purpose. And today we are even more confident in our vision,” she said. “Our strengths must not be underestimated. Because, after all, it lies in our unity. As we have always shown, it takes a lot more strength to build something up than it takes to tear something down.” She argued that Russia is following a tried-and-true playbook of building up a threat…