Topping today’s report: US President Joe Biden departs on a 4-day trip where he will attend a NATO summit; Poland expels 45 Russian diplomats over espionage charges while the Kremlin warns that a Polish proposal for a peacekeeping force in Ukraine would be reckless and the US Army and Navy announce new efforts to increase cyber capabilities. Let’s get right to the full report today and remember you can always find links to our original sources in the Cipher Brief Daily newsletter. Sign up at thecipherbrief.com.