Stocks ended the week with strong gains, including a 185-point burst for the Dow, on reports that Russia was seeking to de-escalate tensions and had ended its military exercises along the Ukraine border.
The developments provided "a good excuse to work off an oversold condition," said analyst Peter Boockvar, who questioned whether it really shed any light on Putin's intentions.
The Russia-Ukraine news overshadowed U.S. airstrikes of Islamic militants in northern Iraq, which had contributed to early jitters; also, the shooting started again between Israel and Hamas.
All 10 S&P industry sectors finished in the black, led by shares of utility, energy and consumer discretionary stocks.
Treasurys shed all of their early gains and ended flat, with the benchmark 10-year yield at 2.42%.