President-elect Barack Obama is planning to nominate at least three key members of his national security team at a Chicago event Monday.

Democratic officials say Senator Hillary Clinton will likely be chosen as Secretary of State.

They say Obama is expected to confirm keeping Defense Secretary Robert Gates in his current post, and will name retired Marine General Jim Jones as National Security Adviser.

Indiana Senator Richard Lugar praised Obama Sunday for his choices.

“Well it's the team of rivals theme I suspect, which President-elect Obama has decided to strengthen his security team by having Democrats, Republicans, likewise having people even within the Democratic party that opposed him and certainly over the long vigorous campaign,” said Senator Lugar.

Lugar says he's impressed with Obama's organizational skills, showcased in the Presidential election. And says Obama has a good track record.