From CNN I'm Ifeoma Dike with the five things you need to know for Tuesday, August 27th.

Former President Donald Trump says he's agreed to the rules of an upcoming ABC debate with Vice President Kamala Harris. Trump made the announcement on Truth Social today. Here's CNN's Kristen Holmes.

The rules will be the same as the last CNN debate. This is what Donald Trump is saying, which seemed to work out well for everyone except Joe Biden. And then it says the debate will be, quote, "stand up," meaning they won't be seated. The candidates cannot bring notes or quote, "cheat sheets." We've also been given assurance by ABC that this will be a fair and equitable debate, and that neither side will be given the questions in advance. I did call a senior adviser after Donald Trump put this out to make sure about this issue on muting the mics. They said, yes, it does mean that the mics will be muted while the other candidate is speaking.

According to a source, Harris' campaign maintains that they're still in talks with ABC over whether the mics will stay muted during next month's debate, but added, quote, "It appears Donald Trump is letting his handlers overrule him. Sad.".

Special counsel Jack Smith filed a new indictment in the election interference case against former President Trump. He slimmed down allegations against the 2024 presidential nominee in light of the Supreme Court's ruling that found presidents have absolute immunity from prosecution for core official acts. The new indictment carves out some of Trump's alleged conduct, including allegations about the attempts to use the Justice Department to promote his false claims of election fraud. It also suggests how prosecutors described the allegations they are continuing to bring about Trump's election subversion schemes. Trump pleaded not guilty to the previous charges against him, but he'll have to enter a new plea as a result of the rewritten charges. CNN's Katelyn Polantz has reaction from Trump's team.

I did speak to a source that has some ability to have insight into what that defense team is thinking right now. They were expecting a rewriting of the charges against Donald Trump like this, following that Supreme Court opinion around presidential immunity. So not a surprise there. However, the timing, that's a surprise. There was an expectation it might come later in the fall, especially after there is a deadline on Friday and a hearing set for next week in this case to figure out the path forward. The fact that it's coming before those things happen, that was a surprise.

'A mother accused of fatally poisoning her husband with a lethal dose of fentanyl at their Utah home in March 2022, has been ordered to stand trial. Kouri Richins pleaded not guilty to 11 felony counts, including aggravated murder, the distribution of controlled substances and various fraud and forgery-related charges. About a year after her husband died, she published a children's book about grief. Court documents allege Richins bought the drugs from an acquaintance, according to a medical examiner. Richins' husband at about five times the lethal dosage in his system. And according to a search warrant affidavit, she also tried to change a life insurance policy to make herself the sole beneficiary. The Utah widow has maintained her innocence, and the trial has been scheduled for late April.

'The Kremlin is trying to calm fears that the arrest of Telegram founder Pavel Durov could upend the popular messaging platform. A Russian government spokesman told reporters today that calls for users to delete their sensitive messages on the app were, quote, "utterly stupid." Durov was arrested in France Saturday on a warrant related to Telegram's lack of moderation. On Monday, the Paris prosecutor's office announced a slew of charges against the tech founder, including allegations his platform was complicit in aiding money launderers, drug traffickers and people spreading child pornography. The Kremlin's move today to soothe concerns underscores just how important the app has become in Russia, including for the Russian military and pro-Kremlin bloggers.

Coming up, tap water problems for one tourist destination.

Hey, welcome back.

'Tap water in parts of a tourist hotspot in Spain has become so salty it's undrinkable. In several towns in Spain's Costa Blanca region along the Mediterranean coastline, residents and visitors have had to line up for bottled or tanked-in drinking water. The area has been struggling with severe and prolonged drought. Groundwater levels have dropped, and that's made space for seawater to seep in, contaminating the drinking water.

That's all for now. Our next episode drops at 6 a.m. Eastern.