Donald Trump says he is confident he will overturn a federal appeals court decision to keep a suspension of his controversial travel ban in place.

Speaking at a joint news conference with Japanese Prime Minister Shinzo Abe, President Trump said he will "do what's necessary" to keep America safe.

He also hinted that as well as fighting the appeal ruling, the White House will release a further executive order on security and immigration, possibly as early as next week.

"We'll be doing something very rapidly having to do with additional security for our country," he said.

"You'll be seeing that sometime next week," he told the news conference.


"In addition we will continue to go through the court process, and I have no doubt we'll win that particular case," Mr Trump continued.

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His remarks come after he lashed out at the court decision on Twitter, claiming the judges had made a political decision that imperils the nation.

The ban affects nationals from seven Muslim-majority nations.

In a cordial news conference, preceded by a long and slightly awkward handshake in which Mr Trump seemed to be pulling very hard on Mr Abe's hand, the two men made a show of their respect for one another.

Mr Trump remarked that the alliance between Japan and America was vital to the pacific region's stability and security, emphasising his commitment to the US military presence there.

The two men will travel to Mr Trump's residence in Mar-a-Lago, Florida, where they will play golf and discuss subjects on which there is less agreement.

These include the Trans Pacific Partnership trade deal and Mr Trump's desire for Japan to manufacture more cars inside the United States.