US Secretary of State Antony Blinken has stressed his country's intention to rebuild ties with other NATO members and strengthen the alliance to counter China.
Blinken is in Brussels for his first European visit since assuming office to attend a NATO foreign ministerial meeting.
In a speech he gave on Tuesday, he said he has "come here to express the United States' steadfast commitment."
He also said the members "have to make sure that NATO is also focused on some of the challenges that China poses to the rules-based international order."
Blinken spoke about the planned withdrawal of US troops from Afghanistan as early as the end of April.
He said "we went in together, we have adjusted together and when the time is right we will leave together," indicating that the United States will keep close consultation with other NATO members on the matter.
US relations with NATO strained during the Trump administration.