New Delhi, Jan. 28 -- As finance minister Nirmala Sitharaman sets out to present her record ninth consecutive Union budget, the Indian economy is experiencing a rare goldilocks period of high economic growth and low inflation. At the same time, uncertainty abounds as the world is disrupted by geopolitical crises and tariff wars which have upended global trade like never before. This will engage the FM's attention. She is also well aware that India's enviable headline numbers mask some inherent challenges. The economic expansion, for instance, is powered largely by government spending, with other engines of growth such as private investment, public consumption and exports remaining sluggish. To sustain a high rate of growth, all of them ha...