Dwight D. Eisenhower comments on Soviet leadership shakeup at press conference

The transcript describes a scene where the president enters a chamber filled with correspondents and cameras. He mentions a new experiment and hopes it won't be disruptive. The transcript then shifts to a speech by Khrushchev, indicating changes and expressing dissatisfaction with internal matters.

Who was mentioned as the first party secretary in the context of the speech?

What does the president express dissatisfaction about?