Trump criticised after reportedly sharing classified info with Russia

US President Donald Trump reportedly shared classified information about Islamic State with senior Russian officials, though the White House quickly denied the allegations.

Meeting Russian foreign minister Sergei Lavrov and ambassador Sergey Kislyak, Trump allegedly shared classified information despite the fact it was highly restricted even within the administration, according to the Washington Post.

Trump's relationship with Russia has been under the spotlight since his victory over Hillary Clinton in last November's election, with his recent sacking of FBI director James Comey ramping up the pressure on the Republican.

According to a senior US official in the WP, Trump "revealed more information to the Russian ambassador than we have shared with our own allies".

The information is thought to be in relation to an ISIS plan to use laptops when carrying out attacks on aircrafts.

Trump was quick to defend his actions during the meeting with Lavrov and Kislyak during a series of tweets posted on Tuesday.

"As President I wanted to share with Russia (at an openly scheduled W.H. meeting) which I have the absolute right to do, facts pertaining to terrorism and airline flight safety," Trump posted.

"EXTREMELY DANGEROUS"

Secretary of state Rex Tillerson denied the accusations pointed at Trump, saying "a broad range of subjects were discussed."

"During President Trump’s meeting with Foreign Minister Lavrov, a broad range of subjects were discussed, among which were common efforts and threats regarding counter-terrorism," Tillerson said.

"During that exchange, the nature of specific threats were discussed, but they did not discuss sources, methods or military operations," he added.

National security adviser HR McMaster said: “At no time were intelligence sources or methods discussed and the president did not disclose any military operations that weren’t already publicly known. I was in the room. It didn’t happen.”

The leading Democrat in the US Senate, Chuck Schumer, said that if the allegations were confirmed it would represent an "extremely dangerous" move from the President.

"Revealing classified information at this level is extremely dangerous and puts at risk the lives of Americans and those who gather intelligence for our country," Schumer said in a statement. "The President owes the intelligence community, the American people, and Congress a full explanation."