Ukraine is desperately short of US-made Patriot air defence missiles that can counter Russia's ballistic missiles, and Moscow's fast-flying jet-powered drones have brought another challenge since the Russian military's full-scale invasion began four-and-a-half-years ago

The 30-share BSE Sensex shed 47.16 points or 0.06 per cent at 77,425.78 in the initial trade. The 50-share NSE Nifty dipped 3.75 points or 0.02 per cent at 24,251.50 during the early deals