KEILAR: Venezuela's self-proclaimed president greeted by cheering supporters today.</s>KEILAR: Opposition leader, Juan Guaido, recognized by the U.S. as president there, returning to Venezuela despite threats that he would be arrested if he re-entered the country. National Security Advisor John Bolton is backing Guaido, tweeting, "Any threats or acts against his safe return will be met with a strong and significant response." CNN correspondent, Patrick Oppmann, is in Caracas where Guaido just spoke. What did he say, Patrick?</s>PATRICK OPPMANN, CNN INTERNATIONAL CORRESPONDENT: He greeted the crowd and called it a small victory. It played out like a Hollywood thriller. The last several days, we have been wondering how he would re-enter the country. The government, at certain points, indicated he might be arrested. And people speculated perhaps he would come across the border or be smuggled in or one of these countries might lend him a military aircraft. But at the end of the day, he came through the front door, was greeted in Caracas by a number of ambassadors from European countries, who escorted him out of the airport to the area where I was. And as soon as he got to this plaza in central Caracas, the crowd just went absolutely wild. It was an electrifying moment and probably breathed new life into the opposition movement, which had been flagging in recent days. There's still the question of whether Guaido's return will lead to a change, will lead to President Nicolas Maduro stepping down. The answer is does not seems to be something that will happen anytime soon.</s>KEILAR: Dramatic moments. Thank you so much, Patrick Oppmann. That is it for me. Erica Hill is in for Brooke Baldwin today and "NEWSROOM" starts right now.
Juan Guaido Returns to Venezuela with John Bolton Backing.