Now, to the crisis in Ukraine, after a deal signed yesterday by the U.S. And Russia. There's new questions this morning about whether it will stick. And ABC's Martha Raddatz, tracking the latest... See More
Now, to the crisis in Ukraine, after a deal signed yesterday by the U.S. And Russia. There's new questions this morning about whether it will stick. And ABC's Martha Raddatz, tracking the latest developments. Good morning, Martha. Reporter: Good morning, George. The next few days are critical in determining whether the Russians and their supporters will honor this agreement. But this morning, TRE is no sign that the agreement is working. This morning, defiance. Pro-russian militants occupying buildings in eastern Ukraine say they will not leave until the Ukrainian government steps down. Thursday's agreement between the U.S., Russia, Ukraine and the european union is clear. The militants must retreat from those Ukrainian government buildings, seized in violent protests. And the Ukrainians promise those who lay down their weapons will be granted amnesty. But within hours of the agreement, president Obama voiced doubts about the Russians' intentions. My hope is that we actually do see followthrough over the next several days. But I don't think, given past performance, that we can count on that. Reporter: And just hours before, president Putin said he still reserves the right to send in Russian troops, who remain by the thousands along Ukraine's border. And this morning, more about those disturbing reports of anti-semitic leaflets, calling on jewish citizens to register or face deportation. The local rabbi telling ABC, the flyers were handed out to the congregation by three masked men, a move that outraged U.S. Officials. This is not just intolerable. It's grotesque. It's beyond unacceptable. Reporter: It is unclear who is behind those flyers. Jews are not being asked to register by any official. The rabbi told us, it appears to be a hoax, an effort to inflame the crisis. George? Certainly chilling. Martha, thank you. Also, we saw the president yesterday. You pointed out he's very skeptical that the Russians are going to followthrough. And he did promise more sanctions if they don't. Reporter: He did. He is very skeptical. And they are readying more sanctions. There's some reports this morning that some of them might be against Vladimir Putin himself. Personal fortune. Okay. Martha Raddatz, thanks very much.
This transcript has been automatically generated and may not be 100% accurate.