The rupee fell by 8 paise on Thursday to settle at an all-time low of 84.50 against the US dollar, primarily due to a massive sell-off in domestic equity markets, ongoing foreign investment outflows, and surging crude oil prices due to geopolitical instability.According to forex traders, the dollar is witnessing safe and robust growth because of its reputation as a haven amidst rising tensions between Russia and Ukraine.In the interbank foreign exchange market, the rupee opened at 84.41 and fell to an all-time low of 84.51 against the US dollar during the day. It ended the session at 84.50 (provisional),…