Four years in, shifts in Obama strategy, outlook

(AP) Four years ago he was the fifth-youngest president to take the oath of office. Barack Obama now is 51, his hair more gray, his face more lined. And the changes in the president aren't all physical.

As he enters Term Two, he is sounding more confident, vowing a harder line on negotiations, relying more on trusted allies, promising less and expressing more cynicism about the grip of partisanship on Washington.

And perhaps most important, he seems more convinced of a need to keep the public with him, coming full circle to his people-driven 2008 campaign.