President Trump’s order to halt most foreign aid has intensified humanitarian crises and raised questions about the United States’ reliability as a global leader.

The extent of the impacts of the Trump administration’s sudden 90-day freeze of almost all foreign aid is still unclear almost a week on, as officials and aid workers overseas try to make sense of which activities must be suspended.

Trump administration changes have upended the U.S. agency charged with providing humanitarian aid overseas, with senior officials put on leave, contractors laid off and a sweeping freeze imposed on foreign assistance.