U.S. equity futures moved lower in early Tuesday trading, while Treasury bond rallied and the dollar ticked higher, as investors retreated to safe-haven assets amid a worrying escalation of rhetoric and positioning in the ongoing war between Russia and Ukraine.

Markets sold off Tuesday as geopolitical tensions escalated between Ukraine and Russia. The Dow fell 300 points, or 0.7%; and the S&P 500 and Nasdaq 100 both moved around 0.5% lower. The selling comes after Moscow changed its nuclear doctrine following the Biden administration giving Ukraine permission to use longer-range weapons inside targets in Russia.