New York CNN Business  — 

The stock market gave investors whiplash Monday as Wall Street tried to predict the next events in a rapidly evolving and tumultuous conflict between Russia and Ukraine.

US stocks fell on Monday after the United States said it would close the US embassy in Kyiv. US officials are “temporarily relocating” the small number of remaining diplomatic personnel to Lviv, a city in the west of the country, “due to the dramatic acceleration in the buildup of Russian forces,” Secretary of State Antony Blinken announced Monday.

That spooked Wall Street, which fears war in Eastern Europe could be imminent.

In addition to the potential for large-scale loss of human life, investors fear a prolonged war between Russia and Ukraine could damage the global economy. Russia remains one of the world’s leading energy exporters, and a war could cut off supply of its natural gas and oil to other countries that depend on it. That could send prices surging at a time when much of the world is already coping with sky-high inflation.

The Dow (INDU) fell 172 points, or 0.5%, on Monday. The broader S&P 500 (SPX) also fell 0.4%, and the Nasdaq (COMP) was unchanged.

Stocks had started the day higher, following reports that a diplomatic resolution between Russia and Ukraine may be reached before an armed conflict begins. Kremlin spokesperson Dmitry Peskov Monday morning opened the door to negotiations: If Ukraine refused “the idea of joining NATO” it “would significantly contribute to the formulation of a more meaningful response to Russian concerns,” Peskov said.

But the market seesawed throughout the day — falling, then rising again, and then tumbling once more — as Wall Street tried to read the tea leaves from diplomatic statements. Fuzzy crystal balls made for nervous investors.

The VIX volatility index rose 4.6% Monday, and CNN Business’ Fear and Greed Index tumbled to 32, close to “extreme fear.” Just a month ago, the index was squarely in “greed” mode.

Ukraine may be top of mind for investors, but it’s far from the only thing concerning Wall Street. Investors continue to watch prices soar, giving them agita about the Fed potentially raising rates higher and faster than expected.

St. Louis Federal Reserve President James Bullard told CNBC Monday that the Fed may have to do just that: “This is a lot of inflation in the US economy,” said Bullard, who is a member of the Fed’s rate-setting committee. “Our credibility is on the line here. We have to react to data. However, I think we can do it in a way that is organized and not disruptive to markets.”

Bullard reiterated his concern that the central bank may not be moving fast enough in response to high inflation, and he repeated his view that the Fed should ramp up interest rates to 1% by July 1.

“Buckle up, a bumpy ride is in the cards,” said Louis Navellier, chairman of Navellier & Associates, in a note to investors. “The Wall of Worry has added a few bricks of uncertainty around inflation, monetary policy, Ukraine, masking and pandemic cases.”

Oil hits $95 a barrel

As investors grow increasingly concerned about the potential of a Russian invasion of Ukraine, US oil prices jumped to $95 a barrel on Monday for the first time since 2014.

After trading flat earlier in the day, crude jumped 2.5% to $95.36 a barrel during afternoon trading. Brent crude, the world benchmark, jumped more than 1.5% to about $96 a barrel.

The rally leaves oil within striking distance of $100 a barrel and comes after the State Department’s Kyiv embassy closure announcement.

Natural gas futures also soared 7%, hitting session highs above $4.20 per million BTU.

– CNN Business’ Matt Egan contributed to this report.