With his chancellor delivering her Spring Statement, the prime minister for once looked happy by her side – because, during a war, no one expects the sums to add up, says John Rentoul A s the chancellor delivered her Spring Statement , I was watching the prime minister , sitting beside her. For once, he did not look worried or tense. He was enjoying himself. At one point, he put his finger to his lips to shush an over-excited shadow minister opposite – Chris Philp, the shadow home secretary, I