The unsettled trading follows Trump's national address late Wednesday
Oil prices have been dictating much of the recent swings in the market: TD advisor
The Nasdaq fell more than 10% below its all-time high set early this year
The latest flip-flop came after the U.S. delivered plan to Iran to pause war
The S&P/TSX composite index tumbled more than 450 points on Thursday
Uncertainty from the war has led to manic back-and-forth swings in oil, stock markets
The Middle East war has made it difficult for anyone to make economic forecasts
The April crude oil contract was down US$11.32 at US$83.45 per barrel
The S&P/TSX composite index was down more than 300 points on Thursday
In financial markets, worries are centred on how long the war with Iran could last