Obama's Berlin speech: History raises the stakes

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US President Barack Obama and first lady Michelle Obama and their daughters Sasha, left, and Malia disembark from Air Force One at the Tegel airport in Berlin Tuesday, June 18, 2013. Obama arrived for a two-day official visit to Germany. (AP Photo/Michael Probst)

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Obama's Berlin s... US President Barack Obama and first lady Michelle Obama and their daughters Sasha, left, and Malia disembark from Air Force One at the Tegel airport in Berlin Tuesday, June 18, 2013. Obama arrived for a two-day official visit to Germany. (AP Photo/Michael Probst)
Obama to renew c... President Barack Obama listens to French President Francois Hollande during the G-8 summit at the Lough Erne golf resort in Enniskillen, Northern Ireland, Tuesday, June 18, 2013. The final day of the G-8 summit of wealthy nations is ending with discussions on globe-trotting corporate tax dodgers, a lunch with leaders from Africa, and suspense over whether Russia and Western leaders can avoid diplomatic fireworks over their deadlock on Syria’s civil war. (AP Photo/Evan Vucci)
NSA director say... From left, Deputy Attorney General James Cole; National Security Agency (NSA) Deputy Director Chris Inglis; NSA Director Gen. Keith B. Alexander; Deputy FBI Director Sean Joyce; and Robert Litt, general counsel to the Office of the Director of National Intelligence; prepares to testify on Capitol Hill in Washington, Tuesday, June 18, 2013, before the House Intelligence Committee hearing regarding NSA surveillance. (AP Photo/Charles Dharapak)
CBO: Senate Immi... People shout out against the Strengthen and Fortify Enforcement Act in the hall outside the House Judiciary Committee hearing on Capitol Hill in Washington, Tuesday, June 18, 2013. The committee in the Republican-led House is preparing to cast its first votes on immigration this year, on a tough enforcement-focused measure that Democrats and immigrant groups are protesting loudly. (AP Photo/Carolyn Kaster)
Military plans w... FILE - In this Sept. 18, 2012 file photo, female soldiers from 1st Brigade Combat Team, 101st Airborne Division train on a firing range while testing new body armor in Fort Campbell, Ky., in preparation for their deployment to Afghanistan. Women may be able to begin training as Army Rangers by mid-2015, and as Navy SEALs a year later under broad plans Defense Secretary Chuck Hagel is approving that would slowly bring women into thousands of combat jobs, including those in the country’s elite special operations forces, according to details of the plans submitted to Hagel that were obtained by The Associated Press. (AP Photo/Mark Humphrey, File)
Google asks FISA... FILE - In this April 12, 2012 file photo, Google workers ride bikes outside of Google headquarters in Mountain View, Calif. Google on Tuesday, June 18, 2013, sharply challenged the federal government's gag order on its Internet surveillance program, citing what it described as a First Amendment right to divulge how many requests it receives from the government for data about its customers in the name of national security. (AP Photo/Paul Sakuma, File)
House, Senate on... Senate Minority Leader Mitch McConnell of Ky., accompanied by members of the GOP leadership, meet with reporters on Capitol Hill in Washington, Tuesday, June 18, 2013, following a Republican strategy session. From left are, Sen. Lamar Alexander, R-Tenn., Sen. John Thune, R-S.D, Sen. John Barrasso, R-Wyo., McConnell, and Senate Minority Whip John Cornyn of Texas. (AP Photo/J. Scott Applewhite)
House takes up f... Rep. Trent Franks, R-Ariz., arrives on Capitol Hill in Washington, Tuesday, June 18, 2013, at House Judiciary Committee hearing to discuss the Strengthen and Fortify Enforcement Act. Republicans in the House of Representatives on Tuesday make their most concerted effort of the year to change U.S. abortion law with legislation that would ban almost all abortions after a fetus reaches the age of 20 weeks. (AP Photo/Carolyn Kaster)
Medicare: Cost-s... FILE - In this March 14, 2009 file photo, a woman gets ready to check her blood sugar in Sacramento, Calif. Medicare begins a major change next month that could save older diabetics money and time when they buy crucial supplies to test their blood sugar _ but it also may cause some patient confusion. On July 1, Medicare opens a national mail-order program for diabetes testing supplies that will drop substantially the prices the government pays for those products _ and will restrict who's allowed to sell them. The goal is to save taxpayer dollars, and seniors in the program should see their copays drop, too, from more than $15 an order to less than $5. For a chronic disease, that can add up fast. (AP Photo/Steve Yeater, File)
Civil rights gro... Supporters of a lawsuit challenging the NYPD's Muslim surveillance program, hold signs during a gathering on a plaza in front of New York City Police Department headquarters, Tuesday, June 18, 2013. In a lawsuit filed Tuesday, civil rights lawyers urged a U.S. judge to declare the NYPD's widespread spying programs directed at Muslims to be unconstitutional, order police to stop their surveillance and destroy any records in police files.(AP Photo/Richard Drew)
Booker encounter... FILE - In a Saturday, June 8, 2013 file photo, Newark Mayor Cory Booker announces his plans to run for the U.S. Senate seat that opened with the death of Frank Lautenberg (D-N.J.) during a news conference in Newark, N.J. Booker, 44, is currently serving in his second term as mayor. At center is former Sen. Bill Bradley. (AP Photo/Rich Schultz, File)
Obama: NSA secre... U.S. President Barack Obama gestures during a speech at the Belfast Waterfront on Monday, June 17, 2013, in Belfast, Northern Ireland. Obama is attending the G-8 summit in Enniskillen, Northern Ireland where leaders are expected to discuss the ongoing conflict in Syria, and free-trade issues. (AP Photo/Evan Vucci)