Saudi Arabia Investment Minister Khalid Al-Falih says it's only natural for the Kingdom to invest capital in the US as it looks to modernize and diversify its economy. He also says it's compelling for US companies to invest in Saudi Arabia. Crown Prince Mohammed bin Salman pledged to invest up to $1 trillion in the US during his visit this week to Washington. Al-Falih speaks to Bloomberg's Annmarie Hordern at a US-Saudi Investment Forum.