Since 2014, the US has committed more than $1.5 billion in security assistance to Ukraine. How does Ukraine’s military use those funds, and why are they so essential? Plus, the name Sergii Leshchenko keeps coming up in conjunction with the US impeachment inquiry. He's a former member of Ukraine's parliament and now a journalist. Republicans say he helped the Democratic Party in the 2016 US presidential elections, which Leshchenko denies. And, we've got an interview with Robbie Robertson, songwriter and lead guitarist for the iconic Canadian rock band, The Band.