Trump ought to be careful about what he wishes for; every time he gets what he wants, his situation deteriorates. Susan Rice is part of the mix now. At some point she will testify under oath. Trump will wish that she had not.  
US intelligence agencies were investigating the attempt by Russia to interfere with the American election. In the course of her duties, Rice learns that there is evidence of the involvement of American citizens. She rightly wants to know who they were, and consistent with procedure, she asks intelligence officers to "unmask" them, i.e., to tell her who they are. (She does not unmask them herself, nor does she 'leak' the names.) Some of the named individuals turn out be members of, or connected to, the Trump campaign. What were they up to? Stay tuned.
I think Obama will be criticized for not pursuing the Trump-Russia nexus vigorously enough. He didn't want to be accused of partisanship; he thought Trump would lose; he thought he could leave the mess for Clinton.