Exhausted Russia Awakening to Putin's Flaws—British Intel ChiefPeople in Russia are noticing how Vladimir Putin has "misjudged" his invasion of Ukraine, a U.K. intelligence chief will say on Tuesday.Jeremy Fleming, director of the British GCHQ (Government Communications Headquarters) intelligence agency, is to say he believed the mobilization, which has caused an exodus of hundreds of thousands, was part of a picture of the Russian president's "flawed" decision-making."With little effective internal challenge, his decision-making has proved flawed," he will say, adding that Russian forces are "exhausted" and that the costs to Russia in both troops and equipment has been "staggering."On Monday, President Joe Biden pledged continued U.S. security assistance during a call with Ukrainian President Volodymyr Zelensky, "including advanced air defense systems."British defense officials said on Tuesday that "he will likely have to contest with an increasingly factional Russian MOD which is poorly resourced to achieve the political objectives it has been set in Ukraine.""