7 things to know now: GOP convention; Melania's speech; fourth 'Star Trek' film announced

Here's a roundup of news trending across the nation and world today.

What to know now:

1. RNC Day 1: The first day of the Republican National Convention saw something other GOP conventions haven't – an appearance by the presumptive candidate. Donald Trump emerged in a cloud of fog and lights Monday night at the Quicken Loans Arena in Cleveland to introduce his wife, Melania. A host of others gave speeches, including former New York Mayor Rudy Giuliani, two men who tried to save those attacked by militants in Benghazi in the 2012 and Lt. Gen. Michael Flynn who caught flak from social media for saying "war is not about bathrooms." The speeches followed a fight on the convention floor over how delegates can vote that left many vowing to leave the convention and the party. On Tuesday, the delegates will officially nominate Trump for president, and New Jersey Gov. Chris Christie, House Speaker Paul Ryan and two of Trump's children will speak.

2. That sounds familiar: Only minutes after her appearance at the RNC on Monday, Melania Trump can under fire when at least one passage of her speech appeared plagiarized from a speech Michelle Obama gave at the Democratic National Convention in 2008.  The campaign did not directly address the controversy over the nearly identical portions of the speeches, but did issue this statement:  "In writing her beautiful speech, Melania's team of writers took notes on her life's inspirations, and in some instances included fragments that reflected her own thinking. Melania's immigrant experience and love for America shone through in her speech, which made it such a success," according to Jason Miller, the senior communications adviser.

3. Awaiting word: Russia is facing a possible ban from the Olympic Games after an investigation showed the country likely participated in long-term, state-sponsored doping of its athletes. The World Anti-Doping Agency called for all Russian athletes and government officials to be banned from the upcoming Summer Olympic Games in Rio de Janeiro, following the release of the report. The country's track and field athletes were already banned from the Games last month after it was found that test results that were positive for performance-enhancing drugs were hidden from Olympic officials during the Sochi Games in 2012.

4. Missiles fired again: North Korea launched three ballistic missiles Tuesday, according to military officials in South Korea. The missiles traveled between 310 and 375 miles before crashing into the sea off the east coast of the divided country, officials said. The missile launches came after South Korea announced it would soon deploy a U.S. missile defense system.

5. Attack in Germany: A man wielding an ax attacked several people on a train in Germany Monday before he was shot and killed by police. The 17-year-old  Afghan had a knife in addition to the ax he used in the attack. According to some reports, the Islamic State  has claimed responsibility for the attack. What police described as a hand-drawn flag that resembles the ISIS flag was found in the attacker's possessions.

And one more

Actor Chris Hemsworth will reprise his role as the father of James T. Kirk in a new "Star Trek" movie, Paramount Pictures announced Monday. With the release of the third film in the rebooted franchise set to open Friday, the announcement of a fourth installment has excited fans of the 1960s TV series. According to the studio, Chris Pine's Capt. Kirk will get to meet his father, the man who died before he was born. Paramount did not announce a date for the release of the next film.

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