House Speaker Nancy Pelosi and a bipartisan delegation of American lawmakers has visited Jordan to discuss “the deepening crisis” in Syria amid a shaky US-brokered cease-fire.

According to a statement from Pelosi’s office, the delegation met Saturday with Jordan’s King Abdullah II in Amman and held “vital discussions about the impact to regional stability.” Jordan is a key U.S. ally in the region.

The visit to the Middle East came as the US has been withdrawing troops from Syria, following President Donald Trump’s abrupt decision to have US forces stand aside for a Turkish incursion into Syria’s Kurdish-held north.

Jordan News Agency says Abdullah stressed in the meeting the importance of safeguarding Syria’s territorial integrity.Turkey has demanded both Kurdish and Syrian government forces withdraw from a designated border zone.