President Donald Trump has said he still has faith in de-nuclearization negotiations with North Korean leader Kim Jong Un, even after the country fired a barrage of projectiles into the sea.

'Anything in this very interesting world is possible, but I believe that Kim Jong Un fully realizes the great economic potential of North Korea, & will do nothing to interfere or end it,' Trump tweeted on Saturday morning, while en route to Trump National Golf Club in Sterling, Virginia from the White House.

'He also knows that I am with him & does not want to break his promise to me. Deal will happen!' the president added.

Early on Saturday, North Korea conducted its first major weapons test since November 2017, firing a barrage of what the South Korean military described as 'unidentified short-range projectiles' into the sea off its east coast.

Trump and Kim Jong Un are seen meeting in Hanoi in February, before talks broke down and the two sides walked away. Trump says a deal is possible even after Kim's weapons test

The South Korean military initially described it as a missile launch, but subsequently retracted that language in favor of a more vague description.

The incident marked a further breakdown in progress after Trump and Kim abruptly walked away from their second meeting, which took place in Hanoi in February.

Each side blamed the other for making unreasonable demands, with the North Korean delegation pinning the blame specifically on hardline National Security Advisor John Bolton and Secretary of State Mike Pompeo.

Trump's olive branch to Kim came amid a barrage of presidential tweets on Saturday morning, including one promising improved relations with Russia.

'Very good call yesterday with President Putin of Russia. Tremendous potential for a good/great relationship with Russia, despite what you read and see in the Fake News Media. Look how they have misled you on “Russia Collusion.” The World can be a better and safer place. Nice!' Trump wrote.

The President also touted his plans for infrastructure spending, the subject of a meeting earlier this week where Trump and Democratic Congressional leaders agreed on a tentative $2 trillion plan that would encompass highways, bridges, broadband and other infrastructure in addition to rail over many years.

'There is nothing easy about a USA Infrastructure Plan, especially when our great Country has spent an astounding 7 trillion dollars in the Middle East over the last 19 years, but I am looking hard at a bipartisan plan of 1 to 2 trillion dollars. Badly needed!' Trump wrote.

Trump's Twitter activity also included a salvo of criticism aimed at Facebook for its recent ban of several controversial figures, most of them conservative or right-wing.

He retweeted former InfoWars editor-at-large Paul Joseph Watson, who was among those Facebook banned as 'dangerous individuals'.

Trump's tweet barrage blasting Facebook included retweets of former InfoWars editor-at-large Paul Joseph Watson (above), who was among those Facebook banned as 'dangerous'

Watson wrote: 'The support for me has been incredible. This could actually lead to some genuine change. Keep up the pressure. Don't let it rest.'

Trump's retweets included a range of commentary blasting Facebook's ban as politically-motivated censorship.

'When did we decide, as Americans, that it's ok fo govt & 3d parties to censor/ curate our info? That we cannot be trusted with unfiltered info?' read one tweet by Sharyl Attkisson, host of the Sinclair Broadcasting television show Full Measure News.

'Lmao at establishment conservatives who think they won’t be labeled the new “dangerous” / “extremist” voices when those to the right of them are all banned. Good luck with that one guys,' wrote author and filmmaker Lauren Southern.

Facebook's ban on Friday included Nation of Islam leader Louis Farrakhan, right-wing personalities Paul Nehlen, Milo Yiannopoulos and Laura Loomer, as well as radio host Alex Jones and his website, Infowars, which often posts conspiracy theories.