KNOW IT ALL: Friday's Top 7 Stories at NBC News

Image: Erskine Wildfire near Lake Isabella
A handout photo released by the Kern County Fire Department on June 23, 2016, shows the fast spreading Erskine Fire which has destroyed 80 homes and has burned 5,000 acres in Lake Isabella, California.KERN COUNTY FIRE DEPARTMENT/HAND / EPA

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Good morning. Here are some of the headlines we're following this morning:

1. U.K. Votes to Back ‘Brexit,’ Will Leave European Union

Britain has voted to leave the European Union in a historic referendum that forced the country's prime minister to step down, upended markets and set the stage for a messy untangling with far-reaching implications. Read more in NEWS.

2. Britain’s Prime Minister to Step Down

Prime Minister David Cameron said Friday he will step down after voters moved to withdraw from the European Union. The referendum was Cameron delivering on an election promise — but the premier had forcefully campaigned for Britain to remain in the EU. Read more in NEWS.

3. Scotland Seeks Independence Again After ‘Brexit’

Scotland's government began moves Friday to hold a new referendum on independence from the U.K. after the "Brexit" vote, saying it faced being taken out of the European Union against its will. Read more in NEWS.

4. Billions Wiped Off Markets as Pound Hits 31-Year Low

Stock markets crashed, oil prices tumbled and the pound fell to a 31-year low on Friday as Britain's unprecedented vote to leave the European Union shocked investors and dragged the region, the world's largest economic bloc, into a new era of uncertainty. Read more in BUSINESS.

5. This Is the Legacy Battle Obama May Never Win

A key pillar of President Barack Obama's legacy on immigration crumbled on Thursday, leaving little time for the president to rebuild in the waning days of his administration. Read more in POLITICS.

6. U.S. to Say 100 Civilians Killed in 500 Drone Strikes

The Obama administration is preparing to announce as early as next week that it believes around 100 civilians have died in nearly 500 U.S. drone strikes since 2009, U.S. officials tell NBC News. Read more in INVESTIGATIONS.

7. Dozens of Homes Burn in Growing California Wildfire

A wildfire broke out Thursday and exploded in size, consuming at least 50 homes as it tore through several rural communities in central California. Read more at NBC LOS ANGELES.

Nightly Spotlight

This father's permanent show of support for his little boy facing a serious cancer battle is inspiring millions around the world.