Overnight news summary for March 31st.

Sina Finance news on March 31, 1. The Iranian parliament has approved the levy of tolls on ships passing through the Hormuz Strait. 2. Trump pressured Iran to reopen the strait, threatening to "completely destroy" critical energy infrastructure. 3. U.S. Secretary of State Pompeo said that after the end of the Iran war, the U.S. may need to reassess its relationship with NATO, as NATO's "lack of support" for the U.S. during Middle East conflicts is "very disappointing." 4. U.S. crude oil prices closed above $100 per barrel on Monday for the first time since the outbreak of the Iran war. 5. Nvidia closed down 1.40% on Monday, down 20.2% from its closing price on October 29, 2025, marking the stock's entry into bear market territory. 6. Nasdaq will implement a rule adjustment to significantly shorten the time required for large new companies to be included in its main index. 7. White House press secretary Levitt said that Iranian officials "appear more rational behind the scenes and in private." 8. Powell said on Monday that the Fed can wait and see how the impact of the Iran war on the economy and inflation evolves, and the current policy stance is in a good position. 9. White House press secretary Levitt said that Trump intends to call on Arab countries to bear the costs of U.S. military actions against Iran.