Trump's comms director resigns

US President Donald Trump's communications director, Mike Dubke, is set to leave after three months in his White House post, White House adviser Kellyanne Conway said yesterday.

"He has expressed his desire to leave the White House and made very clear that he would see through the president's international trip," White House adviser Kellyanne Conway said in an interview on Fox News, referring to Trump's first overseas trip to the Middle East and Europe that ended on Saturday.

Dubke resigned May 18 though he has not set a last day on the job and is leaving on good terms, according to Axios News.

His departure comes amid White House plans for a larger strategic shake-up to tackle head-on allegations involving communication between Russia and Trump's presidential campaign, including a "war room" to combat mounting questions and multiple probes, reported Reuters.

Meanwhile, US Senator John McCain said Russian President Vladimir Putin is a bigger threat to world security than the so-called Islamic State group and also admitted that Donald Trump makes him "nervous".

Republican McCain -- one of US President Trump's most outspoken critics in his own party -- said Russia's alleged meddling in elections was a danger to democracy, reported AFP.

"I think he (Putin) is the premier and most important threat, more so than ISIS," McCain, chairman of the Senate Armed Services Committee, told the Australian Broadcasting Corporation late Monday.

"I think ISIS can do terrible things ... but it is the Russians who are trying, who tried to destroy the very fundamental of democracy and that is to change the outcome of an American election.

"I have seen no evidence they succeeded but they tried and they are still trying. They just tried to affect the outcome of the French election."

McCain's comments come with the Trump team embroiled in controversy over its relationship with Moscow.