But if you look at this, it's the size of the country of Poland. And really we're back to square one on the search area.
STEPHANOPOULOS: And if those black boxes go silent, we may never know what happened.
GANYARD: That's right. And the black boxes are going to be heard, as we -- as David Wright just saw, coming off from a ship that will be -- have to transit out to this area. It will take three or four days to get out there. And then when they do their operations, they will work only as fast as a person can walk. So, think about that. Searching something the size of Poland at only a walking pace.
You can see that we have three to four days before that pinger runs out, and so time is of the essence.
STEPHANOPOULOS: What a job ahead.
OK, Steve Ganyard, thanks very much.
STEPHANOPOULOS: We're going to turn now to the crisis over Ukraine. Overnight, Crimea moved clocks forward two hours to be on Moscow time. And with Russian troops continuing to mass on the Ukraine border, Secretary of State John Kerry will engage in some last ditch diplomacy with Russia's foreign minister today in Paris.
ABC's chief foreign correspondent Terry Moran is there. Good morning, Terry.
MORAN: Good morning, George.
The very fact that Secretary of State Kerry has flown here for these talks is in and of itself a good sign, that is because there is so much tension right now and so much uncertainty on both sides about what the other side might do.
And Ukraine remains on a hair trigger.
MORAN: This is the flash point of the world right now. Russian tanks and troops pouring up to the tense border between Russia and Ukraine. Routine military exercises, that's what Russia claims. But at the Pentagon, deep skepticism.
REAR ADM. JOHN KIRBY, PENTAGON PRESS SECRETARY: We don't have a full knowledge of their intent, but regardless of the intent it does nothing to deescalate the tension.
MORAN: U.S. intelligence agencies now estimate there are up to 40,000 to 50,000 Russian troops along Ukraine's eastern borders.
So what does Putin want? Across the lands of the former Soviet Union, there are millions of Ethnic Russians, just like in Crimea.
Putin now claims the right to defend all of them, whatever that means.
President Obama, in response, is relying European allies and warning of the dangers of Putin's new doctrine.
BARACK OBAMA, PRESIDENT OF THE UNITED STATES: In the 21st century, the borders of Europe cannot be redrawn with force.
MORAN: Fine words, but Obama's real options are limited. The White House has ruled out a military response and some European leaders are deeply reluctant to impose tough sanctions on Russia that might derail their own fragile economies.
So Mr. Obama has tried another tact -- belittling Russia altogether.
OBAMA: Russia is a regional power that is threatening some of its immediate neighbors, not out of strength, but out of weakness.
MORAN: After Crimea, some analysts say, that sounds unconvincing.
JULIA IOFFE, SENIOR EDITOR, "THE NEW REPUBLIC": The impression is that Putin has flipped the bird to the entire world and what can the U.S. do about it?
If he were to take Eastern Ukraine and Southern Ukraine, the U.S. wouldn't be able to do anything about that.
Is that really a position of weakness?
(END VIDEO TAPE)