President Joe Biden on Wednesday predicted a Russian invasion of Ukraine, citing existential concerns by the country's president, Vladimir Putin, even as he warned of significant economic consequences should such an incursion occur. But he suggested a "minor incursion" would elicit a lesser response than a full-scale invasion of the country. "I'm not so sure he is certain what he is going to do. My guess is he will move in. He has to do something," Biden said