The Biden doctrine: Ukraine gaffe sums up mixed year of foreign policy

On Russia and Putin, the president said the quiet part loud. Re-engagement has been welcomed but the exit from Afghanistan was a disaster. Analysts see much to do to rebuild US credibility

Joe Biden marked his first anniversary in office with a gaffe over Ukraine that undid weeks of disciplined messaging and diplomatic preparation.

The president's suggestion that a minor incursion" by Russia might split Nato over how to respond sent the White House into frantic damage limitation mode.