Is currency stability correlated with sustained international investment? Belt and Road Initiative implies construction (labor/resource deployment) to solidify

Is currency stability correlated with sustained international investment? Belt and Road Initiative implies construction (labor/resource deployment) to solidify economic connections between regions/hemispheres where there are various career specializations and resource concentrations. "Currency" implies "current" (immediate) access to these things, therefore leverage to wield as enabled by inevitable research breakthroughs?