Democrats say an overemphasis on the war in Iraq has come at the expense of Afghanistan and has allowed Al Qaeda to regroup in that region.
European objections keep Georgia, Ukraine off membership track, but US plans for missile-defense program in Europe gets an endorsement.
A deal on missile defense could be part of a 'strategic framework' the presidents plan to sign Sunday, legacies in mind.
Opposition to Ukraine and Georgia's US-backed membership bids, led by Germany, is widely seen as an effort to preserve Europe's growing energy ties with Moscow.
His quest for more forces in Afghanistan, headway on continental missile defense may gain ground in Bucharest.
Ahead of a major summit April 2-4, Germany is leading the opposition against their accession.
High-level talks on contentious issues such as missile defense had a markedly different tone from past rhetoric.
The rapid rise in commuter traffic to and from Budapest is creating Los Angeles-style smog.