By Victor Reklaitis and Barbara Kollmeyer, MarketWatch

NEW YORK (MarketWatch) -- U.S. stocks built on last week's advance, helped by waning Ukraine-Russia tensions and deal news.

Investors also looked for a fresh reading on the housing market due at 10 a.m. Eastern Time, as that report kicks off a big week for economic news.

The S&P 500 (SPX) rose 10 points, or 0.5%, to 1,965 early Monday, adding to its 1.2% weekly gain last week. The Dow Jones Industrial Average(DJI) jumped 93 points, or 0.6%, to 16,756, while the Nasdaq Composite (RIXF) climbed 25 points, or 0.6%, to 4,490.

"Wall Street is once again coming up to tackle technical resistance, but with the momentum built up over the last week, conversations are likely to turn towards when, not if, it can tackle the 17,000 level again," said Alastair McCaig, market analyst at IG, in a note.

Helping out, he said, was the bounce off session lows seen Friday, when the Dow industrials (DJI) recovered from a triple-digit fall. Also read: Where Soros and other big investors are putting their money right now

Foreign ministers from Ukraine and Russia met over the weekend, and an agreement was reached over a convoy of what Russia says is humanitarian aid. However, no progress was made toward a cease-fire in Eastern Ukraine. The news pushed the Europe Stoxx 600 near August highs on Monday.

On the economic front, the NAHB/Wells Fargo Housing Market Index for August will be released at 10 a.m. Eastern Time, with economists polled by MarketWatch expecting a reading of 53. The week also should bring data on housing starts and consumer prices on Tuesday, as well as minutes from the last Federal Open Market Committee meeting on Wednesday.

Federal Reserve Chairwoman Janet Yellen will give a speech at the annual Fed summit in Jackson Hole, Wyo., toward the end of the week. Yellen is expected to say there's still slack in the job market, and she's isn't likely to shift the easy-money stance of the Fed, Jan Hatzius, chief economist at Goldman Sachs, said in an interview with MarketWatch.

Dollar General makes play for Family Dollar

Shares of Dollar General Corp.(DG) rose 10% after offering to buy rival Family Dollar Stores Inc. (FDO) in an all-cash proposal worth $78.50 a share. That's higher than Dollar Tree Inc.'s (DLTR) cash-and-stock bid in July of $74.50 a share. (Read more about the day's notable moves in the Movers & Shakers column http://www.marketwatch.com/story/jinkosolar-urban-outfitters-stocks-to-watch-monday-2014-08-17.)

In commodity markets, oil prices(CLU4) fell on news that Iraqi Kurds had recaptured a large chunk of the biggest dam in the country from Islamist militants, with help from U.S. air power.

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