Trump says ‘I’m OK with’ Russian president Putin’s demand to keep Ukraine out of Nato – as it happened

US president backs defense secretary who said Ukraine's Nato membership was not practical'; Tulsi Gabbard sworn in as national intelligence chief. This blog is now closed.

Several Democratic state attorneys general warned that the country was in the grip of a full-blown constitutional crisis, as they battle Donald Trump in court over actions they argue are lawless and in some cases brazenly unconstitutional.

We are on the brink of a dictatorship, and America has never been in a more dangerous position than she is today," Kris Mayes, the attorney general of Arizona, said at a press conference in Los Angeles on Tuesday.