hospitals will not stop with just one country if they have the strength to keep going. >> reporter: the american president, joe biden, just authorized additional military assistance for ukraine after responding to urgent requests from president zelenskyy, who ju just heard from. mr. biden is also trying to intensify economic pressure on russia. that really is one of the main tools. cnn's arlette saenz and joe johns are covering these stories from washington. let's begin with arlette at the white house. >> reporter: with ukrainian president zelenskyy pleading for more aid, president biden authorized a fresh round of security assistance to be sent to ukraine. the president directing the state department to draw down $200 million worth of security assistance for ukraine. an administration official saying this would include anti-armor, anti-aircraft systems, as well as small arms to help the ukrainian people