By Robin Emmott, Sabine Siebold and Tom Balmforth BRUSSELS/MOSCOW (Reuters) – Russia’s invasion of Ukraine looks designed to take Kyiv and create a land corridor south to the Black Sea, splitting the country into two, military analysts and former officials said, echoing the view of Ukraine’s generals. President Vladimir Putin may still seek some form of control over the entire country, they said, as he strives to stop Ukraine ever joining NATO. He is also not guaranteed victory. A senior U.S. defence official said on Friday that Russia was facing more resistance than it expected, not least in …