* KOSPI rises, foreigners net sellers
* Korean won strengthens against U.S. dollar
* South Korea benchmark bond yield rises
* For the midday report, please click
SEOUL, March 18 (Reuters) - Round-up of South Korean financial markets:
** South Korean shares closed at a two-week high on Friday, posting their biggest weekly rise in six, as markets tracked overnight gains on Wall Street, while investors continued to assess the Russia-Ukraine situation and impact of the Federal Reserve's tightening cycle.
** The Korean won strengthened, while the benchmark bond yield rose.
** The benchmark KOSPI closed up 12.51 points, or 0.46%, at 2,707.02, the highest since March 4. It rose 1.72% on a weekly basis, the sharpest since the first week of February and recovering from a 1.92% fall in the previous week.
** Among heavyweights, technology giant Samsung Electronics fell 0.70%, battery maker LG Chem rose 3.94% and Naver was flat.
** Russian troops appeared to stall in their advance on Ukrainian cities as talks continued between Moscow and Kyiv, although progress on Thursday was elusive.
** Meanwhile, U.S. President Joe Biden will hold a call later on Friday with Chinese leader Xi Jinping, as Washington warned China was considering military support for Russia's invasion of Ukraine.
** Foreigners were net sellers of 101.8 billion won ($84.10 million) worth of shares on the main board.
** The won ended at 1,207.6 per dollar on the onshore settlement platform, 0.55% higher than its previous close.
** The currency gained 2.02% for the week, posting the biggest jump since mid-September 2020.
** In offshore trading, the won was quoted at 1,210.0, while in non-deliverable forward trading its one-month contract was quoted at 1,210.8.
** In money and debt markets, June futures on three-year treasury bonds fell 0.06 point to 107.55.
** The benchmark 10-year yield rose by 3.3 basis points to 2.737%. ($1 = 1,210.4500 won) (Reporting by Joori Roh; Editing by Subhranshu Sahu)