This Morning from CBS News: Sept. 4, 2014

U.S. President Barack Obama joins in a meeting on the situation in Ukraine at the NATO Summit at the Celtic Manor Resort in Newport, Wales September 4, 2014. The leaders (From L-R) are: French President Francois Hollande, Ukraine President Porpshenko, Obama, British Prime Minister David Cameron, German Chancellor Angela Merkel and Italian Prime Minister Matteo Renzi. REUTERS/Larry Downing (UNITED KINGDOM - Tags: POLITICS MILITARY)

United stand

Faced with a mounting militant threat in the Middle East, President Obama and British Prime Minister David Cameron declared this morning that their nations will "not be cowed" by extremists who have killed two American journalists. CBS News correspondent Major Garrett reports, the emerging threat of the Islamic State in Iraq and Syria (ISIS) has rattled NATO members and upset the meeting's official agenda. Discussions of ISIS will dominate on the sidelines of the summit.

NATO warned

Russian Foreign Minister Sergey Lavrov warned NATO this morning against offering any kind of membership to Ukraine, as CBS News correspondent Charlie D'Agata reports, Lavrov said any move in that direction would represent "a blatant attempt to derail all the efforts" toward a peaceful resolution of the fighting in eastern Ukraine.

Mission's end?

When the NATO summit was announced a year ago, everyone thought it would be a meeting in which NATO would celebrate the end of the mission in Afghanistan. But the developments in on the ground there have thrown a monkey wrench into that hope.

Rapid force

NATO staged exercises with troops from all over the alliance in Poland, Lithuania and Estonia -- countries right in the backyard of Russia. Now, reports CBS News' Mark Phillips, NATO says it's going to make this kind of deployment more permanent with a new rapid reaction force about 4,000 strong. They call it a spearhead.

Most moderate

Facing a tough reelection fight in November, Sen. Kay Hagan, D-N.C., distanced herself from President Obama in her first debate against her Republican challenger last night. During the debate, moderated by "CBS This Morning" anchor Norah O'Donnell, Hagan criticized the president's policies on Syria, immigration, and the environment while proudly touting herself as the "most moderate senator in the nation."

Speed trap

Two of the country's worst speed traps, according to AAA, are on a 20-mile road that runs through a North Florida town. CBS News' Vincenti Arenas reports, Waldo's seven police officers wrote nearly 12,000 speeding tickets last year, collecting more than $400,000 in fines -- a third of the town's revenue.

Twin separation

The Mata twins, Knatalye Hope and Adeline Faith, were born via Cesarean section on April 11 at 3:41 a.m. at Texas Children's Hospital in Houston, weighing just 3 pounds and 7 ounces. The girls share their loving parents but also a liver, diaphragm, the lining of the heart and intestines. Doctors have now begun the difficult work of figuring out how to separate them.

Extra Help

The online tutoring industry is growing, as parents seek more convenient and affordable alternatives to the traditional in-person tutor. Many parents cite the convenience of not having to travel to and from a tutoring center. For kids, there is the extra incentive of using technology to make learning more fun.

Capital Bard

This year marks the 450th birthday of William Shakespeare, and you may be surprised to learn that his most important work lives not in his home country of Britain, but on the other side of the pond in Washington, D.C. CBS News correspondent Julianna Goldman gets an exclusive look inside the theater at the Folger Shakespeare Library.

Role models

Ahead of New York's fashion week, top designers donated dresses for a runway show that featured women of the military instead of top models.

Googling nature

The Wilderness Society's Warren Alford is capturing the beauty of the forest for others to see. He's a volunteer with Google's Backpack Trekker Program. The tech company started the initiative last year to allow people to see a panoramic view of scenic but hard to reach places. Alford's backpack is equipped with 15 high-definition cameras that are constantly taking pictures.

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