Who is Jack Teixeira, the Pentagon Documents Leaker?

(CNN) - President Donald Trump will formally launch his re-election campaign at a June rally in Orlando, he said Friday.

"I will be announcing my Second Term Presidential Run with First Lady Melania, Vice President Mike Pence, and Second Lady Karen Pence on June 18th in Orlando, Florida," Trump wrote on Twitter.

I will be announcing my Second Term Presidential Run with First Lady Melania, Vice President Mike Pence, and Second Lady Karen Pence on June 18th in Orlando, Florida, at the 20,000 seat Amway Center. Join us for this Historic Rally! Tickets: https://t.co/1krDP2oQvG

— Donald J. Trump (@realDonaldTrump) ٣١ مايو ٢٠١٩

Trump acknowledged for the first time that Moscow had helped him win the 2016 presidential election, but retracted his earlier criticism of Special Investigator Robert Mueller, who investigated Russia's intervention in the election.

Trump said on Twitter: "Russia, Russia, Russia! That's all you heard at the beginning of this Witch Hunt Hoax," in an angry response to Muller's proposal that Congress take action to dismiss the president for obstructing the work of the judiciary.

 But even though Trump did not delete Twitter, he quickly backed away from what he admitted to reporters when he left for Colorado that Russia "if it intervened, it helped the other side."