Today's 5 things: Baton Rouge. Turkey. France.

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baton rouge shooting timeline nick valencia dnt_00003328

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(CNN)Heartbreak in Baton Rouge. It's Monday, and here are the 5 things you need to know to Get Up to Speed and Out the Door.

1. Police officers killed

    Oh no, not again. That was the nation's reaction yesterday as it dealt with yet another nightmare -- police officers ambushed and killed. This time it was in Baton Rouge, Louisiana, where an ex-Marine lured police into a shootout that left two officers and a sheriff's deputy dead. Baton Rouge had already been on edge after the Alton Sterling shooting by police and the killings of five officers in Dallas. The three officers killed yesterday were Montrell Jackson, Brad Garafola and Matthew Gerald.

    2. Turkey

    It'll be a Monday like no other in Turkey, as the country continues to respond to last week's coup attempt. Twenty-seven men accused of masterminding the plot -- including a four-star general -- are in court this morning, and at least 6,000 members of Turkey's military have been arrested. President Recep Tayyip Erdogan is already talking about bringing back the death penalty to deal with those involved. Friday's uprising left at least 290 dead and more than 1,400 injured in one chaotic night of violence.

    3. France

    Charlie Hebdo. Paris. And now Nice. Three terror attacks in 18 months, and France is absolutely reeling after this latest one. At least 84 people were killed late last week when a man drove a 20-ton truck along a packed promenade, mowing down men, women and children who had gathered to watch fireworks. The killer, Mohamed Lahouaiej Bouhlel, was a petty criminal who French officials say was radicalized very quickly. His former lawyer said Bouhlel "wasn't very intelligent" and "could have been influenced by religion." A total of six people have been arrested so far in the attack, including an Albanian couple yesterday.

    4. Campaign 2016

    Donald Trump's about to star in the biggest reality show of his life. The billionaire and former "Apprentice" host gears up for the GOP convention starting today in Cleveland, which culminates with him formally accepting the GOP presidential nomination Thursday night. Trump may be ready for the convention, but is Cleveland? Fears of violence breaking out are pretty high. Protesters are already marching through the streets; police are nervous -- especially after the recent police killings -- and want the state's open carry gun laws suspended during the convention.

    5. Weather

    Heat dome. Those two words are really all you need to know about the weather forecast this week. A dome of high temperatures and high humidity will cook most of the nation this week (only the Pacific Northwest will escape it). Conditions will be dangerous and potentially deadly, especially in the Midwest, where cities like Kansas City, St. Louis, and Chicago will suffer through heat indexes hovering near 120 degrees.

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