Rise in interest rates, recession fears, the Russia-Ukraine war as well as rising concerns over Covid cases in China will keep the markets on edge in 2023, suggest experts. “This decline in forex reserves is to defend the rupee amid pressures caused majorly by global developments. On the technical front, 17950 and 18300 are immediate support and resistance in Nifty 50,” Mohit Nigam, Fund Manager & Head - PMS, Hem Securities, said.