U.S. President Donald Trump speaks during the Inaugural Law Enforcement Officers and First Responders Reception in the Blue Room of the White House in Washington, US, January 22, 2017. [Photo/Agencies]

INTERNATIONAL RELATIONS

Trump invites Israeli Prime Minister Benjamin Netanyahu to visit Washington in early February during a phone call in which they discuss the importance of strengthening the US-Israeli relationship.

The White House says it is only in the early stages of talks to fulfill Trump's pledge to move the US Embassy in Israel from Tel Aviv to Jerusalem, an action that would likely spark anger in the Arab world.

British Prime Minister Theresa May promises to challenge any "unacceptable" talk when she meets Trump later this week, as she tries to secure Britain's "special relationship" with the new US administration.

LEGAL CHALLENGE

A group including former White House ethics attorneys plans to file a lawsuit on Monday accusing Trump of allowing his businesses to accept payments from foreign governments, in violation of the US Constitution.