https://www.mercurynews.com/2022/01/29/explainer-russias-risky-options-beyond-full-ukraine-attack/ > By BEN FOX and VLADIMIR ISACHENKOV Associated Press > WASHINGTON (AP) — Russian President Vladimir Putin appears to be preparing to launch an invasion of Ukraine, with more than 100,000 troops positioned around the country. Certainly, the U.S. believes that’s the case and President Joe Biden has warned Ukrainian President Volodymyr Zelenskyy that an attack could come in February.