Vice President Mike Pence made an unannounced trip to Afghanistan to meet its leaders and underscore U.S. commitment to the country four months after President Donald Trump agreed to an open-ended war against insurgents here.

Pence arrived on a military plane at Bagram Airfield under the cover of darkness on Thursday night after leaving Washington on Wednesday night. He then flew by helicopter to Kabul, where he met President Ashraf Ghani and Chief Executive Abdullah Abdullah at the presidential palace.

Pence told the leaders he hoped his presence there was tangible evidence that the United States was "here to see this through."