for analysis on the address. director of the office on u.s. politics at the university college of london. very good morning to you. as we've just heard there from the small clip, the president's focus was clearly framed around his biggest foreign policy crisis, that is of course ukraine. he addressed key concerns in kyiv. do you think he hit the right notes? the right balance? >> great to be with you, isa. biden's main challenge was twofold. he needed to tout the white house's' chiefments and he had to talk about the problems. overall i think he was successful. in the economy biden emphasized strong gdp and growth. he understood inflation reaching 40 year peak. on covid he highlighted the pandemic relief bill and progress on immunization.