Ukrainian President Volodymyr Zelenskyy is set to visit Washington this week to discuss the Biden administration's request for an additional $24 billion in security and humanitarian aid for Ukraine. The US has already provided Ukraine with more than $1.5 billion in security assistance since 2014, and has appointed a special envoy to facilitate a peaceful resolution to the conflict in eastern Ukraine. The visit is seen as a key step in the Biden administration's efforts to support Ukraine, with the debate over the aid package expected to be a major focus.