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Good morning and welcome to the Sunday edition of Morning Wire, where we give you the weekend rundown to get ready for the week ahead. Today, a fatal van ramming and stabbing near Berlin’s Pride festival is believed to have been an Islamic extremist terror attack, officials said; Laura Loomer explains her shift on Russia’s war with Ukraine; and whale "supergroups" are rebounding.

But first, we look at the impacts as the second largest reservoir in the United States is shrinking to near historic lows.

UP FIRST

A person stands at an overlook near the Wahweap Marina on Lake Powell at the Glen Canyon National Recreation Area, July 14, near Page, Ariz. (AP Photo/John Locher)

As Lake Powell shrinks, marinas are having to adapt to dwindling water levels

Lake Powell, the second largest reservoir in the United States, is shrinking. Overuse, drought and climate change have pummeled the lake fed by the imperiled Colorado River to near historic lows, made worse by the driest winter on record and extreme heat. Marinas in this important tourist destination have had to adapt. Boat ramps have closed or moved, new ones have been added and marinas have been temporarily relocated to deeper waters. "The Colorado River is in full-blown crisis mode," said John Berggren, regional policy manager with Western Resource Advocates, an environmental nonprofit. Read more.

TOP STORIES

Police officers on Sunday stand near a vehicle that crashed into a tree after driving into a crowd near Berlin's annual Pride event, in Berlin, Germany. (AP Photo/Markus Schreiber)

Germany says fatal Berlin Pride attack believed to be an act of Islamic extremist terror

A van ramming and stabbing near Berlin’s Pride festival that left one person dead and many others injured is believed to have been an Islamic extremist terror attack, Germany’s interior minister said Sunday. Authorities said the suspect is believed to have injured several people after he drove a van into a crowd at a park near the Pride festival’s closing party. He then allegedly attacked other people with a weapon, suspected to be a machete. “Everything we see here points to us dealing with an Islamic terror attack,” Interior Minister Alexander Dobrindt said. He put the total number of injured at 29. Read more.

Exclusive: In a Ukrainian bomb shelter, Laura Loomer explains shift on Russia’s war

Laura Loomer became infamous for spreading conspiracy theories online. Now, as she travels across Ukraine to see the damage inflicted by Russia in its yearslong war, she wants to admit that she fell for some falsehoods of her own. A close ally of President Donald Trump, Loomer has completely reversed her longtime criticism of Ukraine and is urging fellow conservatives to be wary of Moscow’s propaganda, which she blames for duping large swaths of the American right. She spoke with The Associated Press in Kyiv from an underground bomb shelter as the city faced another ballistic missile attack.  Read more.